CD8-/CD57+ NK Cell Count details

Description

This counts a specific, less commonly tested subset of natural killer (NK) cells, identified by the absence of the CD8 marker and presence of CD57. It's used in specialized immune function panels, sometimes ordered in the context of evaluating chronic infections (including some tick-borne illness evaluations) or certain complex immune conditions, though its clinical significance and standard reference interpretation are less well established than for more routine immune markers like total CD4 or CD8 counts. It's typically ordered by practitioners with a specific reason to assess this particular immune cell subset rather than as part of routine testing.

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Laboratory

Blood tests with CD8-/CD57+ NK Cell Count

Explore available tests to better understand your results and gain deeper insights into your health.

Panel

HNK1 (CD57) Profile

$95.49

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

Basophils (%) The percentage of your white blood cells that are basophils, a cell type involved in allergic and inflammatory responses.
CD8-/CD57+ NK Cell Count Counts a specific subset of natural killer cells sometimes used in specialized immune function testing, including chronic infection evaluations.
Eosinophils (%) The percentage of your white blood cells that are eosinophils, elevated with allergies, asthma, or parasitic infections.
Hematocrit The percentage of your blood volume made up of red blood cells. Used to help diagnose anemia or polycythemia (excess red blood cells).
Hemoglobin The oxygen-carrying protein in your red blood cells. A core marker for diagnosing anemia 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.
Lymphocytes (%) The percentage of your white blood cells that are lymphocytes, key immune cells including T-cells, B-cells, and NK cells.
Monocytes (%) The percentage of your white blood cells that are monocytes, cells that help fight infection and clear damaged tissue.
Neutrophils (%) The percentage of your white blood cells that are neutrophils, a first-line defense against infection.
% CD8-/CD57+ NK Cells The percentage of lymphocytes that are this natural killer cell subset, used in specialized immune function assessments.
Basophils The number of basophils, a type of white blood cell involved in allergic and inflammatory responses, in your blood.
Eosinophils The number of eosinophils, a white blood cell type involved in allergic reactions and parasite defense, in your blood.
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.
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 Hemoglobin Concentration (MCHC) Mean Corpuscular Hemoglobin Concentration — the average concentration of hemoglobin within your red blood cells, used to help classify types 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.
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.
Neutrophils The number of neutrophils, the most abundant white blood cell type and a first-line defense against infection, in your blood.
Nucleated RBC (%), Automated
Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various 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.
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.
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.