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Labcorp
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Quest Diagnostics
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Showing 409–432 of 1013 results
Fusarium moniliforme (m9) IgE
Labcorp
Not offered
This test checks for an allergic reaction to Fusarium moniliforme, a type of fungus. By measuring the IgE antibodies in your blood, it helps identify if you have an allergy to this specific fungus.
Galactose-Alpha-1,3-Galactose (Alpha-Gal) IgE
Labcorp
Not offered
The Galactose-alpha-1,3 galactose (Alpha-Gal) IgE test more specifically defines the etiology of allergic responses to meat allergens in patients with a delayed onset of symptoms (3 to 6 hours after meal). IgE to Alpha-Gal is the likely cause of anaphylactic reactions in individuals who develop hypersensitivities to beef, pork and/or lamb as adults.
Galectin-3
Labcorp
Not offered
This test is used to identify individuals with chronic heart failure who are at an increased risk of disease progression. Galectin-3 is a type of protein that can indicate the severity of heart failure.
Gamma-Glutamyl Transferase (GGT)
This test measures gamma-glutamyl transferase (GGT), an enzyme produced primarily in the liver. GGT is used in the diagnosis and monitoring of hepatobiliary diseases.
- Gamma-Glutamyl Transferase (GGT) Gamma-glutamyl transferase, a liver enzyme sensitive to bile duct problems and alcohol use, often used alongside other liver tests.
This test measures gamma-glutamyl transferase (GGT), an enzyme produced primarily in the liver. GGT is used in the diagnosis and monitoring of hepatobiliary diseases.
- Gamma-Glutamyl Transferase (GGT) Gamma-glutamyl transferase, a liver enzyme sensitive to bile duct problems and alcohol use, often used alongside other liver tests.
Garlic (f47) IgE
Labcorp
Not offered
This test measures the body's immune response to garlic, helping to identify potential garlic allergies. By analyzing a small serum sample, healthcare providers can determine if an individual's immune system reacts abnormally to garlic, which is crucial for those experiencing allergic symptoms after garlic consumption.
Gastrin
This test measures the level of gastrin in the blood. It is primarily used for diagnosing and monitoring gastrin-secreting tumors, such as gastrinomas, which are associated with Zollinger-Ellison syndrome. Elevated gastrin levels can also indicate conditions like gastric ulcers or pernicious anemia. It is a valuable tool in the differential diagnosis of hypergastrinemia-related disorders.
- Gastrin A hormone that stimulates stomach acid production. Elevated levels can indicate conditions like Zollinger-Ellison syndrome or chronic acid-suppressing medication use.
This test measures the level of gastrin in the blood. It is primarily used for diagnosing and monitoring gastrin-secreting tumors, such as gastrinomas, which are associated with Zollinger-Ellison syndrome. Elevated gastrin levels can also indicate conditions like gastric ulcers or pernicious anemia. It is a valuable tool in the differential diagnosis of hypergastrinemia-related disorders.
- Gastrin A hormone that stimulates stomach acid production. Elevated levels can indicate conditions like Zollinger-Ellison syndrome or chronic acid-suppressing medication use.
Gelatin, Bovine(c74) IgE
Labcorp
Not offered
This test measures the IgE antibody response to bovine gelatin, helping in the diagnosis of allergic diseases. It's a sensitive in vitro assay used alongside other clinical information for a comprehensive diagnosis.
Gerbil (e209) IgE
Labcorp
Not offered
This test measures the IgE antibody levels in response to gerbil allergens in your blood. It's specifically designed to help identify if you have an allergy to gerbils, which can be useful for individuals experiencing allergy symptoms when exposed to these pets.
Giant Ragweed (Tall) (w3) IgE
Labcorp
Not offered
This test measures the body's allergic response to Giant Ragweed by checking the level of specific IgE antibodies in the serum. It's particularly useful for individuals who may be experiencing seasonal allergies, helping to confirm the cause of symptoms.
Giardia Antigen Detection
Quest
Not offered
This test detects giardia antigen in stool. Giardia’s identification is important for infection control and for treatment of giardiasis.
Giardia Antigen, EIA, Stool
Labcorp
Not offered
Giardiasis is recognized as an important human intestinal disease in most areas of the world. The causative organism, Giardia duodenalis (lamblia), is the most frequently identified protozoan parasite in stool specimens submitted to public health laboratories. This parasite has been implicated in a number of epidemics, and the endemicity in the U.S. is well recognized. Acute symptoms of Giardiasis may include diarrhea, malabsorption, abdominal cramps, anorexia, nausea, weight loss, flatulence, anemia, and general weakness lasting from several weeks to several months. Chronic infections can also occur with or without an acute phase, are often associated with treatment failure, and may result in recurrent symptoms. Infection with Giardia may also be asymptomatic.
Ginger (f270) IgE
Labcorp
Not offered
This test measures the body's immune response to ginger by checking for specific IgE antibodies in the serum. It's useful for identifying potential ginger allergies, helping to guide dietary choices and manage allergic reactions.
Gliadin (Deamidated) Antibody (IgA)
Labcorp
Not offered
This test checks for antibodies against gliadin, a key protein in gluten, to help diagnose celiac disease. While gliadin antibodies can appear in people without celiac disease, making the test less specific, recent advancements have improved its accuracy. The test now uses deamidated gliadin peptides, which have a higher chance of detecting celiac disease accurately due to their strong reaction with celiac-specific antibodies.
Gliadin (Deamidated) Antibody (IgG)
Labcorp
Not offered
This test checks for antibodies against gliadin, a key protein in gluten, to help diagnose celiac disease. While gliadin antibodies can appear in people without celiac disease, making the test less specific than others, recent advancements have improved its accuracy. The test now uses deamidated gliadin peptides, which have a higher chance of detecting celiac disease accurately.
Gliadin (Deamidated) Antibody (IgG, IgA)
Labcorp
Not offered
This test is crucial for diagnosing celiac disease by detecting antibodies against gliadin, a key protein in gluten. While gliadin antibodies can appear in people without celiac disease, making the test less specific, recent advancements have improved its accuracy. The test now focuses on deamidated gliadin peptides, which have a stronger reaction with antibodies in celiac patients, offering a more precise diagnosis compared to traditional gliadin antibody tests.
Glial Fibrillary Acidic Protein (GFAP), Plasma
Labcorp
Not offered
Glial fibrillary acidic protein (GFAP) is a protein expressed in astrocytes, cells that support neurons and help form the blood-brain barrier, found within the central nervous system (CNS), and is involved in several important CNS processes. It is a marker of astrogliosis and is upregulated in the brain as a result of attempts at repair and the formation of a glial scar. Glial scarring occurs as a result of several neurodegenerative processes, including Alzheimer's disease, multiple sclerosis, and neuromyelitis optica. It can also be seen after damaging pathological events such as traumatic brain injury and stroke [1]. Increased presence of GFAP can also be observed in association with brain tumors such as glioblastoma multiforme [2]. GFAP expression is known to decrease in disorders such as schizophrenia, bipolar disorder, and depression [3].
- Glial Fibrillary Acidic Protein (GFAP) A protein released by brain support cells (astrocytes) when they're injured. Studied as a marker of brain injury and certain neurological conditions.
Glial Fibrillary Acidic Protein (GFAP), Serum
Quest
Not offered
This test measures glial fibrillary acidic protein (GFAP), a protein found primarily in astrocytes, which are supportive cells in the central nervous system. GFAP levels may help assess injury or damage to the brain and nervous system and are sometimes evaluated in the context of neurological conditions, traumatic brain injury, and neuroinflammatory disorders.
- Glial Fibrillary Acidic Protein (GFAP) A protein released by brain support cells (astrocytes) when they're injured. Studied as a marker of brain injury and certain neurological conditions.
Glucagon
Labcorp
Not offered
This test is primarily used to check for a specific type of tumor in the pancreas known as a glucagon-secreting tumor or glucagonoma. Glucagonomas can lead to a unique set of symptoms including a distinctive rash, mild diabetes, weight loss, and low levels of amino acids in the blood (hypoaminoacidemia). High levels of glucagon in the plasma confirm the presence of a glucagonoma.
Glucose
This test measures the concentration of glucose in the blood. Blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Glucose Your blood sugar level at the time of the test — a core marker for diagnosing and monitoring diabetes and metabolic health.
This test measures the concentration of glucose in the blood. Blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Glucose Your blood sugar level at the time of the test — a core marker for diagnosing and monitoring diabetes and metabolic health.
Glucose-6-Phosphate Dehydrogenase (G6PD)
Quest
Not offered
This test measures glucose 6-phosphate dehydrogenase (G6PD) to evaluate G6PD deficiency.
- Glucose-6-Phosphate Dehydrogenase (G6PD) Measures the activity of glucose-6-phosphate dehydrogenase, an enzyme that protects red blood cells. Deficiency can cause anemia triggered by certain foods, infections, or medications.
- 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.
Glucose-6-Phosphate Dehydrogenase, Quantitative
Labcorp
Not offered
This test measures the level of G6PD enzyme, helping to identify G6PD deficiency, the most common enzyme deficiency worldwide. It's particularly prevalent among individuals of African, Mediterranean, and Asian descent. G6PD deficiency, an X-linked genetic disorder, varies in severity and primarily affects males. Newborns may experience prolonged jaundice, while adults could face acute hemolytic anemia with symptoms like jaundice, fatigue, and dark urine. Certain illnesses, foods (like fava beans), and medications can trigger these episodes.
- Glucose-6-Phosphate Dehydrogenase (G6PD) Measures the activity of glucose-6-phosphate dehydrogenase, an enzyme that protects red blood cells. Deficiency can cause anemia triggered by certain foods, infections, or medications.
Glucose, Fasting
This test measures fasting blood glucose, which reflects the body's baseline glucose level after a period without food. Fasting blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
This test measures fasting blood glucose, which reflects the body's baseline glucose level after a period without food. Fasting blood glucose levels are used for the diagnosis and treatment of carbohydrate metabolic disorders.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
Glucose, Fasting and Gestational, 135 Cutoff
Labcorp
Not offered
This test is used to screen for gestational diabetes. A reading of 135 mg/dL or higher suggests the need for a comprehensive gestational glucose tolerance test, conducted while fasting, to confirm if gestational diabetes is present.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 50 g Oral Glucose)
Glucose, Fasting and Gestational, 140 Cutoff
Labcorp
Not offered
This test is used to screen for gestational diabetes. A reading of 140 mg/dL or higher suggests the need for a comprehensive gestational glucose tolerance test, conducted while fasting, to confirm if gestational diabetes is present.
- Fasting Glucose Blood sugar measured after fasting, one of the primary tests used to screen for prediabetes and diabetes.
- Glucose, 1-Hour (after 50 g Oral Glucose)