Lymphocytes (%): What It Is and What Your Result Means

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Quest $22.49

This panel checks key markers to determine if the patient has levels that point towards anemia.

Sample type: Serum Whole Blood
Avg. sample processing time: 5 Business days
Require fasting: Yes

Biomarkers

Myelocytes The absolute number of myelocytes, early immature white blood cells normally found only in bone marrow, in your blood.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Nucleated RBC (%) The number of nucleated red blood cells, immature red cells not normally seen in adult blood, expressed relative to your white blood cells.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Metamyelocytes The absolute number of metamyelocytes, immature white blood cells normally found in bone marrow, in your blood as part of a differential count.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Band Neutrophils Counts the number of band neutrophils, young infection-fighting white blood cells, per volume of blood, which can rise with infection or inflammation.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Nucleated RBC The absolute number of nucleated red blood cells, immature red cells not normally seen in adult blood, as part of a blood count.
Iron % Saturation The percentage of transferrin (your iron-carrying protein) that's currently occupied by iron — a key marker for detecting iron deficiency or overload.
Blasts Counts the number of blasts, very immature blood cells, in your blood sample as part of a full differential blood count.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Mean Platelet Volume (MPV) Measures the average size of your platelets, the cells that help blood clot, and is read alongside your platelet count.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Band Neutrophils (%) Shows band neutrophils, young infection-fighting white blood cells, as a percentage of all your white blood cells, which can rise with infection or inflammation.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Reticulocyte Count, Automated The percentage of young red blood cells in your blood, reflecting how actively your bone marrow is producing new cells.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Blasts (%) Shows blasts, very immature blood cells, as a percentage of your white blood cells, reported as part of a full differential blood count.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Myelocytes (%) The percentage of your white blood cells that are myelocytes, early immature white blood cells normally confined to the bone marrow.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Promyelocytes (%) The percentage of your white blood cells that are promyelocytes, immature cells normally found only in bone marrow, reported as part of a differential.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Metamyelocytes (%) The percentage of your white blood cells that are metamyelocytes, an immature white blood cell normally confined to the bone marrow.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Total Iron Binding Capacity (TIBC) Total Iron-Binding Capacity — reflects how much transferrin (the iron-carrying protein) is available in your blood, used with iron and ferritin to evaluate iron status.
Iron, Total Measures the iron circulating in your blood, used along with other markers (like ferritin and TIBC) to evaluate for iron deficiency or overload.
Promyelocytes The absolute number of promyelocytes, immature white blood cells normally found only in bone marrow, in your blood, reported as part of a differential.
Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
Reticulocyte, Absolute The absolute number of reticulocytes, young red blood cells, in your blood, showing how actively your bone marrow is making new red cells.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.

Labcorp $43.99

Quest Not offered

This panel evaluates red blood cells, iron status, and other blood markers that are important for identifying and monitoring anemia.

Sample type: Serum Whole Blood
Avg. sample processing time: 6 Business days
Require fasting: No

Biomarkers

Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Total Iron Binding Capacity (TIBC) Total Iron-Binding Capacity — reflects how much transferrin (the iron-carrying protein) is available in your blood, used with iron and ferritin to evaluate iron status.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Unsaturated Iron Binding Capacity Unsaturated Iron-Binding Capacity — reflects how much additional iron your blood's transferrin could still carry, used with iron and TIBC to assess iron status.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Iron % Saturation The percentage of transferrin (your iron-carrying protein) that's currently occupied by iron — a key marker for detecting iron deficiency or overload.
Reticulocyte Count, Automated The percentage of young red blood cells in your blood, reflecting how actively your bone marrow is producing new cells.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Iron, Total Measures the iron circulating in your blood, used along with other markers (like ferritin and TIBC) to evaluate for iron deficiency or overload.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.

Labcorp Not offered

Quest $46.49

This panel checks key markers to determine if the patient has levels that point towards anemia.

Sample type: Serum Whole Blood
Avg. sample processing time: 5 Business days
Require fasting: Yes

Biomarkers

Total Iron Binding Capacity (TIBC) Total Iron-Binding Capacity — reflects how much transferrin (the iron-carrying protein) is available in your blood, used with iron and ferritin to evaluate iron status.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Promyelocytes The absolute number of promyelocytes, immature white blood cells normally found only in bone marrow, in your blood, reported as part of a differential.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Blasts Counts the number of blasts, very immature blood cells, in your blood sample as part of a full differential blood count.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Folate Vitamin B9, needed for cell division, DNA synthesis, and red blood cell production. Low levels can cause a type of anemia and are important in pregnancy.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Nucleated RBC (%) The number of nucleated red blood cells, immature red cells not normally seen in adult blood, expressed relative to your white blood cells.
Iron % Saturation The percentage of transferrin (your iron-carrying protein) that's currently occupied by iron — a key marker for detecting iron deficiency or overload.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Metamyelocytes The absolute number of metamyelocytes, immature white blood cells normally found in bone marrow, in your blood as part of a differential count.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Myelocytes (%) The percentage of your white blood cells that are myelocytes, early immature white blood cells normally confined to the bone marrow.
Promyelocytes (%) The percentage of your white blood cells that are promyelocytes, immature cells normally found only in bone marrow, reported as part of a differential.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Iron, Total Measures the iron circulating in your blood, used along with other markers (like ferritin and TIBC) to evaluate for iron deficiency or overload.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Myelocytes The absolute number of myelocytes, early immature white blood cells normally found only in bone marrow, in your blood.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Band Neutrophils Counts the number of band neutrophils, young infection-fighting white blood cells, per volume of blood, which can rise with infection or inflammation.
Blasts (%) Shows blasts, very immature blood cells, as a percentage of your white blood cells, reported as part of a full differential blood count.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Ferritin Reflects your body's stored iron levels. Low levels point to iron deficiency; high levels can indicate iron overload or, since it's also an inflammation marker, other conditions.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
Band Neutrophils (%) Shows band neutrophils, young infection-fighting white blood cells, as a percentage of all your white blood cells, which can rise with infection or inflammation.
Mean Platelet Volume (MPV) Measures the average size of your platelets, the cells that help blood clot, and is read alongside your platelet count.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Reticulocyte Count, Automated The percentage of young red blood cells in your blood, reflecting how actively your bone marrow is producing new cells.
Reticulocyte, Absolute The absolute number of reticulocytes, young red blood cells, in your blood, showing how actively your bone marrow is making new red cells.
Nucleated RBC The absolute number of nucleated red blood cells, immature red cells not normally seen in adult blood, as part of a blood count.
Vitamin B12 A vitamin essential for nerve function and red blood cell production. Low levels can cause fatigue, neurological symptoms, and a type of anemia.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Metamyelocytes (%) The percentage of your white blood cells that are metamyelocytes, an immature white blood cell normally confined to the bone marrow.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.

Labcorp $74.49

Quest Not offered

This panel evaluates red blood cells, iron status, and other blood markers that are important for identifying and monitoring anemia.

Sample type: Serum Whole Blood
Avg. sample processing time: 6 Business days
Require fasting: No

Biomarkers

Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Folate Vitamin B9, needed for cell division, DNA synthesis, and red blood cell production. Low levels can cause a type of anemia and are important in pregnancy.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Iron, Total Measures the iron circulating in your blood, used along with other markers (like ferritin and TIBC) to evaluate for iron deficiency or overload.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Total Iron Binding Capacity (TIBC) Total Iron-Binding Capacity — reflects how much transferrin (the iron-carrying protein) is available in your blood, used with iron and ferritin to evaluate iron status.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Vitamin B12 A vitamin essential for nerve function and red blood cell production. Low levels can cause fatigue, neurological symptoms, and a type of anemia.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Unsaturated Iron Binding Capacity Unsaturated Iron-Binding Capacity — reflects how much additional iron your blood's transferrin could still carry, used with iron and TIBC to assess iron status.
Ferritin Reflects your body's stored iron levels. Low levels point to iron deficiency; high levels can indicate iron overload or, since it's also an inflammation marker, other conditions.
Reticulocyte Count, Automated The percentage of young red blood cells in your blood, reflecting how actively your bone marrow is producing new cells.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Iron % Saturation The percentage of transferrin (your iron-carrying protein) that's currently occupied by iron — a key marker for detecting iron deficiency or overload.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.

Labcorp $91.99

Quest Not offered

The CD4:CD8 Ratio Profile measures the percentage and absolute counts of CD4+ and CD8+ cells, along with their ratio. This test is valuable for assessing and monitoring immune system function, as changes in these cell counts and ratios can indicate alterations in immune status.

Sample type: Whole Blood
Avg. sample processing time: 6 Business days
Require fasting: No

Biomarkers

Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Immature Granulocytes The number of young, not-yet-mature white blood cells in circulation — a rise can be an early sign of infection or bone marrow stress.
Absolute CD4+ Cells Counts CD4 'helper' T-cells, a key part of your immune system. Widely used to monitor immune health in HIV and other immune conditions.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
CD4 (%) The percentage of your lymphocytes that are CD4 helper T-cells, used alongside the absolute CD4 count to assess immune function.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Immature Granulocytes (%) The percentage of young, not-yet-mature white blood cells in circulation — a rise can be an early sign of infection or bone marrow stress.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Absolute CD8+ Cells Counts CD8 'cytotoxic' T-cells, immune cells that help destroy infected or abnormal cells. Used to assess immune status.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
CD4/CD8 Ratio Compares two types of immune T-cells. Used to assess immune system balance, especially in HIV monitoring and some autoimmune or infectious conditions.
CD8 (%) The percentage of your lymphocytes that are CD8 cytotoxic T-cells, used alongside the absolute count to assess immune function.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.

Labcorp Not offered

Quest $4.49

CBC (Complete Blood Count) with Differential and Platelets This test is a comprehensive screening tool used to evaluate overall health and detect a wide range of disorders, including anemia, leukemia, and inflammation. It measures several components of your blood, including red and white blood cells, platelets, hemoglobin, and hematocrit, providing valuable information about your body's condition.

Sample type: Whole Blood
Avg. sample processing time: 5 Business days
Require fasting: No

Biomarkers

Blasts (%) Shows blasts, very immature blood cells, as a percentage of your white blood cells, reported as part of a full differential blood count.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Myelocytes The absolute number of myelocytes, early immature white blood cells normally found only in bone marrow, in your blood.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Mean Platelet Volume (MPV) Measures the average size of your platelets, the cells that help blood clot, and is read alongside your platelet count.
Promyelocytes The absolute number of promyelocytes, immature white blood cells normally found only in bone marrow, in your blood, reported as part of a differential.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Promyelocytes (%) The percentage of your white blood cells that are promyelocytes, immature cells normally found only in bone marrow, reported as part of a differential.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Metamyelocytes (%) The percentage of your white blood cells that are metamyelocytes, an immature white blood cell normally confined to the bone marrow.
Band Neutrophils Counts the number of band neutrophils, young infection-fighting white blood cells, per volume of blood, which can rise with infection or inflammation.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Band Neutrophils (%) Shows band neutrophils, young infection-fighting white blood cells, as a percentage of all your white blood cells, which can rise with infection or inflammation.
Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
Myelocytes (%) The percentage of your white blood cells that are myelocytes, early immature white blood cells normally confined to the bone marrow.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Nucleated RBC The absolute number of nucleated red blood cells, immature red cells not normally seen in adult blood, as part of a blood count.
Blasts Counts the number of blasts, very immature blood cells, in your blood sample as part of a full differential blood count.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Metamyelocytes The absolute number of metamyelocytes, immature white blood cells normally found in bone marrow, in your blood as part of a differential count.
Nucleated RBC (%) The number of nucleated red blood cells, immature red cells not normally seen in adult blood, expressed relative to your white blood cells.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.

Labcorp $6.49

Quest Not offered

The complete blood count (CBC) provides a general hematologic assessment. It serves as a screening test for numerous disease states including anemia, inflammatory processes, and leukemia. This test includes the white blood cell differential.

Sample type: Whole Blood
Avg. sample processing time: 2 Business days
Require fasting: No

Biomarkers

Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).

Labcorp Not offered

Quest $3.99

This test is a comprehensive screening tool used to evaluate overall health and detect a wide range of disorders, including anemia, leukemia, and inflammation. It provides valuable information about the number and quality of white blood cells, red blood cells, and platelets.

Sample type: Whole Blood
Avg. sample processing time: 5 Business days
Require fasting: No

Biomarkers

Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Blasts Counts the number of blasts, very immature blood cells, in your blood sample as part of a full differential blood count.
Blasts (%) Shows blasts, very immature blood cells, as a percentage of your white blood cells, reported as part of a full differential blood count.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Nucleated RBC (%) The number of nucleated red blood cells, immature red cells not normally seen in adult blood, expressed relative to your white blood cells.
Band Neutrophils Counts the number of band neutrophils, young infection-fighting white blood cells, per volume of blood, which can rise with infection or inflammation.
Myelocytes (%) The percentage of your white blood cells that are myelocytes, early immature white blood cells normally confined to the bone marrow.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Myelocytes The absolute number of myelocytes, early immature white blood cells normally found only in bone marrow, in your blood.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Promyelocytes The absolute number of promyelocytes, immature white blood cells normally found only in bone marrow, in your blood, reported as part of a differential.
Promyelocytes (%) The percentage of your white blood cells that are promyelocytes, immature cells normally found only in bone marrow, reported as part of a differential.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Metamyelocytes (%) The percentage of your white blood cells that are metamyelocytes, an immature white blood cell normally confined to the bone marrow.
Metamyelocytes The absolute number of metamyelocytes, immature white blood cells normally found in bone marrow, in your blood as part of a differential count.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Band Neutrophils (%) Shows band neutrophils, young infection-fighting white blood cells, as a percentage of all your white blood cells, which can rise with infection or inflammation.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Nucleated RBC The absolute number of nucleated red blood cells, immature red cells not normally seen in adult blood, as part of a blood count.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.

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The HNK1 (CD57) Profile is used to monitor the CD57 lymphocyte subset in patients with chronic Lyme disease.

Sample type: Whole Blood
Avg. sample processing time: 3 Business days
Require fasting: No

Biomarkers

Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Mean Corpuscular Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types of anemia.
Nucleated RBC (%), Automated An automated count of nucleated red blood cells, immature red cells not normally seen in adult blood, reported relative to white blood cells.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Mean Corpuscular Volume Mean Corpuscular Volume — the average size of your red blood cells, a key value used to help determine the cause of anemia.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Red Cell Distribution Width (RDW) Red Cell Distribution Width — measures how much your red blood cells vary in size, helpful for narrowing down the cause of anemia.
CD8-/CD57+ NK Cell Count Counts a specific subset of natural killer cells sometimes used in specialized immune function testing, including chronic infection evaluations.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Immature Granulocytes (%) The percentage of young, not-yet-mature white blood cells in circulation — a rise can be an early sign of infection or bone marrow stress.
Immature Granulocytes The number of young, not-yet-mature white blood cells in circulation — a rise can be an early sign of infection or bone marrow stress.
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia and other blood disorders.
% CD8-/CD57+ NK Cells The percentage of lymphocytes that are this natural killer cell subset, used in specialized immune function assessments.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Mean Corpuscular Hemoglobin (MCH) Mean Corpuscular Hemoglobin — the average amount of hemoglobin per red blood cell, used to help classify types of anemia.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Red Blood Cell Count (RBC) Red blood cell count — the number of oxygen-carrying red blood cells in your blood, used to help diagnose anemia or polycythemia.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.

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Quest $1.99

This test is a crucial screening tool for identifying various conditions, including leukemia and inflammation. It measures the number of white blood cells in the blood, which are vital for fighting infections and diseases.

Sample type: Whole Blood
Avg. sample processing time: 5 Business days
Require fasting: No

Biomarkers

Nucleated RBC The absolute number of nucleated red blood cells, immature red cells not normally seen in adult blood, as part of a blood count.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Lymphocytes The number of lymphocytes, white blood cells central to your immune response (including T-cells, B-cells, and NK cells), in your blood.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Band Neutrophils Counts the number of band neutrophils, young infection-fighting white blood cells, per volume of blood, which can rise with infection or inflammation.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
Blasts (%) Shows blasts, very immature blood cells, as a percentage of your white blood cells, reported as part of a full differential blood count.
Myelocytes The absolute number of myelocytes, early immature white blood cells normally found only in bone marrow, in your blood.
Monocytes The number of monocytes, white blood cells that help fight infection and clear damaged cells, in your blood.
Blasts Counts the number of blasts, very immature blood cells, in your blood sample as part of a full differential blood count.
Myelocytes (%) The percentage of your white blood cells that are myelocytes, early immature white blood cells normally confined to the bone marrow.
White Blood Cell Count (WBC) White blood cell count — the total number of white blood cells in your blood, key immune cells. Used to help detect infection, inflammation, and other blood disorders.
Nucleated RBC (%) The number of nucleated red blood cells, immature red cells not normally seen in adult blood, expressed relative to your white blood cells.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Promyelocytes The absolute number of promyelocytes, immature white blood cells normally found only in bone marrow, in your blood, reported as part of a differential.
Metamyelocytes (%) The percentage of your white blood cells that are metamyelocytes, an immature white blood cell normally confined to the bone marrow.
Metamyelocytes The absolute number of metamyelocytes, immature white blood cells normally found in bone marrow, in your blood as part of a differential count.
Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Promyelocytes (%) The percentage of your white blood cells that are promyelocytes, immature cells normally found only in bone marrow, reported as part of a differential.
Reactive Lymphocytes Reports lymphocytes that look activated under the microscope, a common sign that your immune system is responding to an infection, especially a viral one.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
Band Neutrophils (%) Shows band neutrophils, young infection-fighting white blood cells, as a percentage of all your white blood cells, which can rise with infection or inflammation.

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