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.
Interleukin 28 Measurement
The determination of the amount of interleukin 28 present in a sample.
Double-Negative Myeloid-Derived Suppressor Cell Count
The determination of the number of double-negative myeloid-derived suppressor cells (any MDSC that is both CD14- and CD15-) present in a sample.
Growth Hormone Releasing Hormone Measurement
The determination of the amount of growth hormone releasing hormone present in a sample.
Vegetable Fiber Measurement
The determination of the vegetable fiber present in a sample.
Gut-Homing Helper 22 T-Lymphocyte Subpopulation to Gut-Homing Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of gut-homing helper 22 T-lymphocytes to total gut-homing helper T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Apolipoprotein B to Apolipoprotein A1 Ratio Measurement
The determination of the ratio of the Apolipoprotein B compared with Apolipoprotein A1 in a sample. The measurement may be expressed as a ratio or percentage.
Enterobacter Measurement
The determination of the amount of Enterobacter present in a sample.
Influenza A Virus Measurement
The determination of the amount of Influenza A virus an biological specimen.
N-Nitrosoanabasine Measurement
The determination of the amount of N-nitrosoanabasine in a sample.
Campylobacter coli, Campylobacter jejuni and/or Campylobacter upsaliensis DNA Measurement
The determination of the amount of Campylobacter coli, Campylobacter jejuni and/or Campylobacter upsaliensis DNA present in a sample.
Skin-Homing Cytotoxic Terminal Memory T-Lymphocyte Subpopulation to Skin-Homing Cytotoxic Terminal Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of skin-homing cytotoxic terminal memory T-lymphocytes to total skin-homing cytotoxic terminal memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Vascular Endothelial Growth Factor C Measurement
The determination of the amount of vascular endothelial growth factor C present in a sample.
Penicillium notatum Antigen IgG4 Antibody Measurement
A measurement of the Penicillium notatum antigen IgG4 antibody in a biological specimen.
Serum Calcium Measurement
A quantitative measurement of the amount of calcium present in a sample of serum.
Pyknotic Cell Count
The determination of the amount of pyknotic cells in a sample.
Indirect Bilirubin Measurement
Bilirubin is in the insoluble form, unconjugated bilirubin (indirect bilirubin).The non-water soluble, free bilirubin does not react with sulfanilic acid at acidic pH to produce a red colored complex until an accelearator, alcohol, is added to the solution to perform a quantitative measurement of unconjugated bilirubin levels.
Dengue Virus 3 RNA Measurement
The determination of the amount of dengue virus 3 RNA present in a sample.
Interferon-Induced Protein p78 Measurement
The determination of the amount of interferon-induced protein p78 present in a sample.
Protozoa Measurement
The determination of the amount of protozoa present in a sample.
T-Lymphocytes to Lymphocytes Ratio Measurement
The determination of the ratio of the T-lymphocytes to total lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Skin-Homing Cytotoxic Terminal Memory T-Lymphocyte to Cytotoxic Terminal Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of the skin-homing cytotoxic terminal memory T-lymphocytes to total cytotoxic terminal memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Rheumatoid Factor IgG Autoantibody Measurement
The determination of the amount of rheumatoid factor IgG autoantibody present in a sample.
Dietary Fruit Measurement
The determination of the amount of fruit in a nutritional product or meal, or a portion thereof.
Helper 9 T-Lymphocyte Subpopulation Count
The determination of the number of a subpopulation of helper 22 T-lymphocytes in a sample.