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.
Cytotoxic T-Lymphocytes to Total T-Lymphocytes Ratio Measurement
The determination of the ratio of the cytotoxic T-lymphocytes to total T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Dietary Theobromine Measurement
A determination of the theobromine in a nutritional product or meal, or a portion thereof.
PAX3-FKHR Fusion Protein Measurement
The determination of the amount of PAX3-FKHR fusion protein present in a sample.
Cross-Reactive Binding Antidrug Antibody Measurement
The determination of the cross-reactive binding antidrug antibody in a biological sample.
Count of Unspecified Cells
The determination of the amount of unspecified cells, those not otherwise identified, present in a sample.
Gut-Homing Mucosal-Associated Invariant T-Lymphocyte Subpopulation to Gut-Homing Mucosal-Associated Invariant T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of gut-homing mucosal-associated invariant T-lymphocytes to total gut-homing mucosal-associated invariant T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Epithelial Cells to Non-Squamous Epithelial Cells Ratio Measurement
The determination of the ratio of epithelial cells compared to non-squamous epithelial cells present in a sample. The measurement may be expressed as a ratio or percentage.
Streptococcus pneumoniae Serotype 17F IgG Antibody Measurement
The determination of the amount of Streptococcus pneumoniae serotype 17F IgG antibody present in a sample.
Influenza A Nucleic Acid Measurement
The determination of the amount of Influenza A virus nucleic acid in an biological specimen.
Gamma Glutamyl Transferase to Creatinine Ratio Measurement
The determination of the ratio of gamma glutamyl transferase compared to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
HDAC2 mRNA Measurement
A determination of the amount of HDAC2 mRNA in a biological sample.
Mannitol Measurement
The determination of the amount of mannitol present in a sample.
Globulin to Creatinine Ratio Measurement
The determination of the ratio of globulin compared to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
IDL Cholesterol to LDL Cholesterol Ratio Measurement
The determination of the ratio of the amount of intermediate density lipoprotein cholesterol compared to low density lipoprotein cholesterol present in a sample. The measurement may be expressed as a ratio or percentage.
Herpes Simplex Virus 1 and/or 2 Antigen Measurement
The determination of the amount of herpes simplex virus 1 and/or 2 antigen in a biological sample.
Endogenous Thrombin Potential Lag Time Relative Measurement
A relative measurement (ratio or percentage) of time from the start of the thrombin generation test to the point where a predetermined amount of thrombin is generated.
Streptococcus pneumoniae Serotype 4 IgG Antibody Measurement
The determination of the amount of Streptococcus pneumoniae serotype 4 IgG antibody present in a sample.
Shiga Toxin Measurement
The determination of the amount of shiga toxin in a biological sample.
Alloisoleucine Measurement
The determination of the amount of alloisoleucine present in a sample.
Acrylonitrile Measurement
The determination of the amount of acrylonitrile in a sample.
Fluphenazine Measurement
The determination of the amount of fluphenazine in a sample.
Cytotoxic Terminally Differentiated Exhausted T-Lymphocyte Subpopulation to Cytotoxic Terminally Differentiated Exhausted T-Lymphocyte Ratio Measurement
The determination of a sub-population of cytotoxic terminally differentiated exhausted T-lymphocytes to the total cytotoxic terminally differentiated exhausted T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Spirochaetales Measurement
The determination of the amount of spirochaetales present in a sample.
Prostaglandin D2 Synthase Measurement
The determination of the amount of the prostaglandin D2 synthase in a sample.