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.

Chlamydia trachomatis IgM Antibody Measurement
The determination of the amount of Chlamydia trachomatis IgM antibody present in a sample.
Myeloid Dendritic Cell Subpopulation to Total Dendritic Cell Ratio Measurement
The determination of the ratio of a sub-population of myeloid dendritic cells to total dendritic cells present in a sample. The measurement may be expressed as a ratio or percentage.
N-acetyl-Beta-D-glucosaminidase to Creatinine Ratio Measurement
The determination of the N-acetyl-B-D-glucosaminidase to creatinine in a biological sample. The measurement may be expressed as either a ratio or a percentage.
HIV-2 RNA Measurement
The determination of the amount of HIV-2 RNA present in a sample.
Filamentous Fungi Count
The determination of the amount of filamentous fungus present in a sample.
Factor VIII Inhibitor Measurement
The determination of the amount of factor VIII inhibitor present in a sample.
Extracell Newly Ident RAGE Bind Protein Measurement
The determination of the amount of extracellular newly identified RAGE (receptor for advanced glycation end products) present in a sample.
Radioallergosorbent Test
A type of blood test used to test for allergies.
Gut-Homing Cytotoxic Effector Memory T-Lymphocyte Subpopulation to Gut-Homing Cytotoxic Effector Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of gut-homing cytotoxic effector memory T-lymphocytes to total gut-homing cytotoxic effector memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
HDL Particle Size Measurement
The determination of the amount of the average particle size of high-density lipoprotein in a sample.
Meperidine Measurement
The determination of the amount of meperidine present in a sample.
MutL Homolog 3 Measurement
The determination of the amount of MLH3 mismatch repair protein in a biological sample.
Cryofibrinogen Measurement
The determination of the amount of cryofibrinogen present in a sample.
Bacillota Measurement
The determination of the organisms that are not assigned to the species level but are assigned to the Bacillota phylum level in a sample.
Shigella Measurement
The determination of the organisms that are assigned to the Shigella genus level in a biospecimen.
Monocyte to Leukocyte Subpopulation Ratio Measurement
The determination of the monocytes to a sub-population of leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Perphenazine Measurement
The determination of the amount of perphenazine in a sample.
2-5-Oligoadenylate Synthase 2 Measurement
The determination of the amount of 2-5-oligoadenylate synthase 2 present in a sample.
Non-Mucoid Pseudomonas aeruginosa Measurement
The determination of the amount of non-mucoid Pseudomonas aeruginosa present in a sample.
Serum Cystatin C Assay
An immunoassay used for the measurement of cystatin-C levels in the serum to determine the glomerular filtration rate.
Heterophile Antibody Measurement
The determination of the amount of heterophile antibodies present in a sample.
Dietary Total Folate Measurement
The determination of the total folate (supplemental folic acid + food folate) in a nutritional product or meal, or a portion thereof.
Tissue Plasminogen Activator Measurement
The determination of the amount of tissue plasminogen activator antigen present in a sample.
Pregnancy-Associated Plasma Protein-A Measurement
The determination of the amount of pregnancy-associated plasma protein-A present in a sample.
