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.
Ethyl Glucuronide Measurement
The determination of the amount of ethyl glucuronide present in a sample.
CA125 II Assay
A second generation radioimmunoassay to measure serum levels of CA-125.
Diacetyl Measurement
The determination of the amount of diacetyl in a sample.
Total Amyloid Precursor Protein Measurement
The determination of the amount of the total amyloid precursor protein in a biological specimen.
Pelger Huet Anomaly Measurement
The determination of the amount of Pelger Huet anomaly present in a sample.
Urine Sediment Analysis Measurement
The determination of the type and amount of particulate matter in a urine sample.
Diuretic Measurement
The determination of the amount of any diuretic present in a sample.
Nonhematic Cells to Leukocytes Ratio Measurement
The determination of the ratio of nonhematic cells compared to leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Clot Formation Alpha Angle Measurement
The determination of the angle of incline (tangent at 20mm and the midline) during the rising phase of the thromboelastogram curve, during the clot formation process.
Proinsulin Measurement
The determination of the amount of proinsulin present in a sample.
Hepatits A Virus Surface Antigen Measurement
The determination of the surface antigen reaction of a biological specimen to the Hepatitis A virus.
Dietary Fiber Measurement
The determination of the amount of fiber in a nutritional product or meal, or a portion thereof.
Dilute Russell's Viper Venom Time to Control Ratio Measurement
The determination of the ratio of the dilute Russell's viper venom time in a subject sample to a control sample. The measurement may be expressed as a ratio or percentage.
Poikilocyte Measurement
The determination of the number of poikilocytes present in a sample.
Gut-Homing Helper Memory T-Lymphocyte Subpopulation to Gut-Homing Helper Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of gut-homing helper memory T-lymphocytes to total gut-homing helper memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Prostaglandin F2 Alpha Measurement
The determination of the amount of the prostaglandin F2 alpha in a sample.
Alpha-2 Macroglobulin Measurement
The determination of the amount of alpha-2 macroglobulin present in a sample.
Conventional Effector Memory T-Lymphocyte Subpopulation to Conventional Effector Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of conventional effector memory T-lymphocytes to total conventional effector memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Dietary Alpha Carotene Measurement
A determination of the alpha carotene in a nutritional product or meal, or a portion thereof.
Paraxanthine Measurement
The determination of the paraxanthine present in a sample.
Procollagen Type I Carboxy Terminal Peptide Measurement
The determination of the amount of procollagen type I carboxy terminal peptide present in a sample.
Beta-Aminobutyric Acid Measurement
The determination of the amount of beta-aminobutyric acid present in a sample.
Triticum Species Antigen IgE Antibody Measurement
The determination of the amount of triticum species antigen IgE antibody in a sample.
Immunoglobulin A to Complement C3 Measurement
A relative measurement (ratio) of the immunoglobulin A to complement C3 in a sample. The measurement may be expressed as a ratio or percentage.