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Labcorp
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Quest Diagnostics
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Showing 793–816 of 1013 results
PT with INR
This test measures prothrombin time to evaluate and monitor coagulation disorders.
- International Normalized Ratio (INR) International Normalized Ratio, a standardized measure of blood clotting time. Mainly used to monitor patients on the blood thinner warfarin.
- Prothrombin Time (PT) Prothrombin Time, a measure of how long it takes your blood to clot via one of its main pathways. Used to evaluate bleeding disorders and liver function, and to monitor warfarin therapy.
This test measures prothrombin time to evaluate and monitor coagulation disorders.
- International Normalized Ratio (INR) International Normalized Ratio, a standardized measure of blood clotting time. Mainly used to monitor patients on the blood thinner warfarin.
- Prothrombin Time (PT) Prothrombin Time, a measure of how long it takes your blood to clot via one of its main pathways. Used to evaluate bleeding disorders and liver function, and to monitor warfarin therapy.
Pumpkin (f225) IgE
Labcorp
Not offered
This test measures the body's immune response to pumpkin, indicating if you have an allergy to pumpkin. By analyzing a small serum sample, it identifies the presence of Immunoglobulin E (IgE) antibodies that react to pumpkin, which are markers for this specific allergy.
Pumpkin Seed (f226) IgE
Labcorp
Not offered
This test measures the body's immune response to pumpkin seeds by checking for specific IgE antibodies in the serum. It's useful for identifying potential pumpkin seed allergies, which can help in managing dietary choices and avoiding allergic reactions.
QuantiFERON®-TB Gold Plus
QuantiFERON®-TB Gold Plus is an indirect test for M. tuberculosis infection. It is intended to be used in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations.
- Mitogen-NiL
- QuantiFERON Nil Control A baseline (no-stimulation) control value used in specialized immune function tests, such as TB or allergy blood testing, to interpret the other results correctly.
- QuantiFERON-TB Gold Plus, 1 Tube A blood test that checks whether your immune system has been exposed to tuberculosis, as an alternative to the traditional skin (PPD) test.
- QuantiFERON TB1 Antigen Minus Nil
- QuantiFERON TB2 Antigen Minus Nil
QuantiFERON®-TB Gold Plus is an indirect test for M. tuberculosis infection. It is intended to be used in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations.
- Mitogen-NiL
- QuantiFERON Nil Control A baseline (no-stimulation) control value used in specialized immune function tests, such as TB or allergy blood testing, to interpret the other results correctly.
- QuantiFERON-TB Gold Plus, 1 Tube A blood test that checks whether your immune system has been exposed to tuberculosis, as an alternative to the traditional skin (PPD) test.
- QuantiFERON TB1 Antigen Minus Nil
- QuantiFERON TB2 Antigen Minus Nil
Quantitative Thyroglobulin without Thyroglobulin Antibodies
Labcorp
Not offered
Thyroglobulin (TG) is a secretory product only of the thyroid gland. The major clinical use of serum TG measurement is to monitor, but not to diagnose, patients with well-differentiated thyroid cancers.
- Thyroglobulin (Tg) Thyroglobulin, a protein made by the thyroid gland. Used mainly to monitor for thyroid cancer recurrence after treatment.
Queen Palm (t72) IgE
Labcorp
Not offered
This test measures the IgE response to Queen palm, helping to identify allergic reactions. It's a quantitative assay used alongside other clinical data to assist in diagnosing allergic diseases. Both the American Academy of Allergy, Asthma, and Immunology and the American College of Allergy, Asthma, and Immunology acknowledge situations where an IgE serum test may be more suitable.
Quest AD-Detect® Apolipoprotein E (ApoE) Isoform, Plasma
Labcorp
Not offered
Apolipoprotein E (ApoE) is a well-defined genetic risk factor for late-onset Alzheimer's disease (AD). The human APOE gene has three polymorphic alleles, E2, E3 and E4 that result in six different genotypes: E2/E2, E2/E3, E3/E3, E2/ E4, E3/E4 and E4/E4. About half of AD patients carry the E4 allele (compared with 14% in the general population), with the majority being heterozygotes (E3/E4). The number of inherited E4 alleles is associated with both increased disease risk and decreased average age of onset compared with inheritance of the E2 or E3 alleles. The differences between the three ApoE isoforms are based on two amino acids that affect its structure and hence the interaction and binding of the protein with various lipids and beta-amyloid (AB). ApoE and AB can co-localize in the brain, and therefore their complementary roles in AD have been studied extensively. Circulating plasma and CSF ApoE levels were recently found to be potential biomarkers for AD.
Quest AD-Detect® Beta-Amyloid 42/40 Ratio, Plasma
Labcorp
Not offered
This LC-MS/MS assay measures beta-amyloid 40 (AB40) as well as AB42 in plasma, rather than AB42 alone. This permits the normalization of beta amyloid levels circulating in plasma in different patients. Using the ratio of beta-amyloid 42/beta-amyloid 40, improves sensitivity and specificity for detecting Alzheimer's disease.
Quest AD-Detect® Phosphorylated Tau 217 (p-tau217), Plasma
Labcorp
Not offered
Current research indicates that plasma p-tau, including p-tau 217, is concordant with amyloid status defined by either CSF biomarker testing or PET scan analysis, and is able to differentiate between AD and non-AD neurodegenerative diseases and to predict progression to AD. Blood-based biomarkers, such as plasma p-tau, could potentially be used as inclusion criteria or to evaluate target engagement and treatment efficacy, and could further advance the development of disease-modifying treatments in the field of AD and related disorders. This assay is designed specifically for the quantitative measurement of tau phosphorylated at threonine 217 (p-tau 217) in human plasma.
QuestAssureD 25-Hydroxy and Calcitriol 1,25-Dihydroxyvitamin D
Labcorp
Not offered
Vitamin D originating from dietary and endogenous sources is converted to 25-hydroxyvitamin D in the liver, and subsequently to 1, 25-dihydroxyvitamin D in the kidney. Measurement of both the 1, 25-Dihydroxy and 25-Hydroxy forms provide insights into a variety of medical conditions such Vitamin D status in renal failure, differential diagnosis of primary, secondary and tertiary hyperparathyroidism. Differential diagnosis of hypercalcemia and type I and II inherited rickets.
- Vitamin D, 25-OH, Total The combined measure of both major forms of vitamin D (D2 and D3) in your blood — the standard test used to assess overall vitamin D status.
- Calcitriol (1,25 di-OH Vitamin D) The active, hormone form of vitamin D that directly regulates calcium absorption. Tested less often than 25-OH vitamin D, mainly for kidney or calcium-regulation disorders.
- 25-OH Hydroxy Vitamin D (Cholecalciferol D3)
- 25-OH Hydroxy Vitamin D (Ergocalciferol D2)
- Vitamin D2, 1,25 (OH)2
- Vitamin D3, 1,25 (OH)2
QuestAssureD™ 25-Hydroxyvitamin D (D2, D3)
Labcorp
Not offered
QuestAssureD™ 25-Hydroxyvitamin D Test - This test measures the levels of Vitamin D in the body, which is crucial for bone health. It checks for Vitamin D activity, except in cases of renal disease. Low levels might indicate a dietary deficiency, poor absorption, or liver issues, leading to bone diseases like rickets and osteomalacia. High levels could cause hypercalcemia. The test specifically measures the two common forms of Vitamin D: 25-OH D3 and 25-OH D2.
- Vitamin D, 25-OH, Total The combined measure of both major forms of vitamin D (D2 and D3) in your blood — the standard test used to assess overall vitamin D status.
- 25-OH Hydroxy Vitamin D (Cholecalciferol D3)
- 25-OH Hydroxy Vitamin D (Ergocalciferol D2)
Quinoa (f347) IgE
Labcorp
Not offered
This test measures the body's immune response to quinoa by assessing the level of specific IgE antibodies in the serum. It's useful for individuals who suspect they might have a quinoa allergy, helping to confirm or rule out this food sensitivity.
Rabbit Epithelia (e82) IgE
Labcorp
Not offered
This test measures the IgE antibody response to rabbit epithelia, helping to identify allergic reactions to this specific allergen. It's a quantitative in vitro assay, used alongside other clinical data to assist in diagnosing allergic conditions.
Rabbit (f213) IgE
Labcorp
Not offered
This test is designed to identify allergies to rabbits by measuring the IgE antibodies in your blood. It's a crucial step for individuals who experience allergic reactions and need to confirm if rabbits are the cause.
Rape Seed (rf316) IgE
Labcorp
Not offered
This test measures the IgE antibody response to rapeseed, helping to identify potential food allergies. It's a precise lab test used alongside other clinical information for diagnosing food allergies.
Rape Weed (w203) IgE
Labcorp
Not offered
This test measures your body's IgE response to rape weed pollen, helping to identify allergic reactions. It's a lab test used alongside other clinical information to help diagnose allergic diseases.
Rapid Plasma Reagin (RPR)
Quest
Not offered
This is a non-treponemal screening test for syphilis. When the RPR is reactive, it should be confirmed using a standard treponemal test.
- Rapid Plasma Reagin (RPR) Antibody A screening test for syphilis, based on detecting an immune response typical of active infection.
Raspberry (rf343) IgE
Labcorp
Not offered
This test measures the body's allergic response to raspberries by checking for specific IgE antibodies in the serum. It's useful for individuals who suspect they might have a raspberry allergy, helping to confirm or rule out this specific food allergy.
Rat (e87) IgE
Labcorp
Not offered
This test measures the level of Rat (e87) IgE in the serum. It's designed to help in the diagnosis and monitoring of allergic reactions specifically related to rat allergens.
Rat Epithelia (e73) IgE
Labcorp
Not offered
This test measures the IgE antibody levels in response to rat epithelia, helping to identify allergic reactions to rat dander. It's crucial for diagnosing and managing allergies related to rat exposure.
Red Blood Cell Count
Labcorp
Not offered
This test is part of a complete blood count and is used for screening various conditions such as anemia, leukemia, and inflammation. It helps in identifying the number of red blood cells in the blood, which is crucial for diagnosing different disease states.
- 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 Cedar (t57) IgE
Labcorp
Not offered
This test measures the body's immune response to red cedar through the detection of specific IgE antibodies in the serum. It's particularly useful for identifying allergies to red cedar, which can cause symptoms like sneezing, runny nose, itchy eyes, and asthma in sensitive individuals.
Red Kidney Bean (f287) IgE
Labcorp
Not offered
The Red Kidney Bean (f287) IgE test measures your body's allergic response to red kidney beans by quantifying IgE antibodies. This test is performed in a lab and helps in diagnosing food allergies when combined with other clinical evaluations. Food-specific IgE tests are very sensitive but a positive result doesn't always mean you'll have allergic reactions to the food. A healthcare provider should evaluate these results alongside your medical history to accurately diagnose a food allergy.