Testing Knowledge
Test Directory
Source-backed test guides: what each test is for, how it is performed, its limitations, and which reviewed products serve it. Personal health questions are answered with knowledge and preparation guidance — not supplier sales.
CD95 Cell Surface Expression Measurement
The determination of CD95 cell surface expression in a biospecimen.
Acetyl Propionyl Measurement
The determination of the amount of acetyl propionyl in a sample.
Rubricyte to Total Cell Ratio Measurement
The determination of the ratio of the rubricytes compared to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
Haemophilus influenzae DNA Measurement
The determination of the amount of Haemophilus influenza virus DNA in a biological sample.
Dietary Added Vitamin E Measurement
A determination of the total added vitamin E in a nutritional product or meal, or a portion thereof.
Staphylococcus hominis Measurement
A measurement of Staphylococcus hominis in a sample.
Erythrocyte Distribution Width Measurement
An index of the variation in the size of the red cells and can be used to detect subtle degress of anisocytosis. It is computed directly from the RBC histogram and is calculated as a standard statictical value, the coefficient of variation of the red cell volume ditribution (ratio of standard deviation and mean copuscular volume).
Radiolabeled Glucose to Glucose Ratio Measurement
The determination of the ratio of radiolabeled glucose to total glucose present in a sample. The measurement may be expressed as a ratio or percentage.
Tau Protein Measurement
The determination of the amount of Tau protein present in a sample.
Segmented Granulocyte to Total Cell Ratio Measurement
The determination of the ratio of segmented granulocytes compared to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
Naive Mature B-Lymphocyte Count
The determination of the amount of naive mature B-lymphocytes present in a sample.
17-Ketosteroid Measurement
The determination of the amount of total 17-ketosteroids present in a sample.
Amyloid Alpha Precursor Protein Measurement
The determination of the amount of the amyloid alpha precursor protein in a biological specimen.
Resident Monocytes Count
The determination of the resident monocytes in a biospecimen.
3-Nitrotyrosine Measurement
The determination of the amount of total 3-nitrotyrosine in a sample.
Cytotoxic T-Lymphocyte Subpopulation Count
The determination of the subpopulation of cytotoxic T-lymphocytes in a biospecimen.
Glutamate-Creatine Cycle Rate Measurement
A measurement of the metabolic rate of the glutamate-glutamine cycle in a biological specimen.
Dipeptidyl Peptidase-4 Activity Measurement
The determination of the amount of the biological activity of dipeptidyl peptidase-4 in a sample.
Serum CA125 Measurement
The determination of the amount of cancer antigen 125 present in a blood serum sample.
Free Choline and Glycerophosphorylcholine and Phosphorylcholine Measurement
The determination of the amount of free choline, glycerophosphorylcholine, and phosphorylcholine present in a sample.
Auer Rod Measurement
The determination of the number of Auer rods present in a biospecimen.
Neutralizing Cross-Reactive Binding Antidrug Antibody IgM Measurement
The determination of the neutralizing cross-reactive antidrug binding IgM antibody in a biospecimen.
CD64 Expression Measurement
The determination of cellular CD64 expression in a biological specimen.
Cholate Clearance Test
A test of liver function that measures the clearance of orally-administered cholate to provide an assessment of portal blood flow and IV-administered cholate to provide an assessment of systemic blood flow.