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.
Burkholderia cenocepacia Measurement
The determination of the amount of Burkholderia cenocepacia in a sample.
Coarse Granular Cast Measurement
The determination of the amount of coarse granular casts present in a urine sample.
Hypersegmented Neutrophil Measurement
The determination of the number of hypersegmented neutrophils present in a sample.
Dietary Dairy Measurement
A determination of the total dairy in a nutritional product or meal, or a portion thereof.
Free Testosterone Measurement
The determination of the amount of free testosterone present in a sample.
Sialyl SSEA-1 Antigen Measurement
The determination of the amount of sialyl SSEA-1 antigen present in a sample.
CD31 Expression Measurement
The determination of cellular CD31 expression in a biospecimen.
Human Parainfluenza Virus 3 Nucleic Acid Measurement
The determination of the amount of Human parainfluenza virus 3 nucleic acid present in a sample.
Central Memory Helper T-Lymphocyte Subpopulation to Central Memory Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of T-lymphocytes helper central memory sub-population to T-lymphocytes helper central memory present in a sample. The measurement may be expressed as a ratio or percentage.
Abnormal Kappa Positive Plasma Cell to Abnormal Lambda Positive Plasma Cell Ratio Measurement
The determination of the ratio of abnormal kappa positive plasma cells to abnormal lambda positive plasma cells present in a sample. The measurement may be expressed as a ratio or percentage.
Wild Type Huntingtin Protein Measurement
The determination of the amount of wild type huntingtin protein present in a sample.
Pemphigoid Antibody Measurement
The determination of the amount of pemphigoid antibodies present in a sample.
Gut-Homing Cytotoxic Memory T-Lymphocyte Count
The determination of the gut-homing cytotoxic memory T-lymphocytes present in a sample.
Intermediate Natural Killer Cell Subpopulation Count
A measurement of a sub-population of intermediate natural killer cells present in a sample.
Bolasterone Measurement
The determination of the amount of the bolasterone in a sample.
Alpha-Beta Helper T-Lymphocyte Count
The determination of the number of helper alpha-beta T-lymphocytes in a sample.
Glutathione S-Transferase Y1 Subunit Measurement
The determination of the amount of glutathione S-transferase Y1 subunit present in a sample.
HIV-1 gp41 Antibody Measurement
The determination of the amount of HIV-1 gp41 antibody present in a sample.
Coagulation Index Measurement
A measurement of the efficiency of coagulation of a biological specimen. This is calculated by a mathematical formula that takes into account the R value, K value, angle and maximum amplitude of clot formation.
Alpha-Beta T-Lymphocyte to T-Lymphocyte Ratio Measurement
The determination of the ratio of the alpha-beta T-lymphocytes to total T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Reg upon Act Normal T-cell Exprd Secrtd Measurement
The determination of the amount of the RANTES (regulated on activation, normally, T-cell expressed, and secreted) chemokine present in a sample.
Phenol Measurement
The determination of the amount of phenol in a sample.
Serum Direct Bilirubin Measurement
A quantitative measurement of the amount of conjugated or water-soluble bilirubin present in a sample of serum.
CEA Assay
A laboratory blood test to measure carcinoembryonic antigen (CEA), a protein found in many types of cells, but is associated with tumors. Used as a tumor marker.