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.
Glutamate Dehydrogenase Measurement
The determination of the amount of glutamate dehydrogenase present in a sample.
Tetrahydrocannabinol Measurement
The determination of the amount of tetrahydrocannabinol present in a sample.
Integrin Subunit Beta 3 Measurement
The determination of the amount of integrin subunit beta 3 in a sample.
Dietary Zinc Measurement
A determination of the total Zinc in a nutritional product or meal, or a portion thereof.
Red Blood Cell Folate Measurement
The determination of the concentration of folic acid present in a sample of red blood cells.
Promonocyte to Leukocyte Ratio Measurement
The determination of the ratio of promonocytes compared to leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Erythroid Cells to Total Cells Ratio Measurement
The determination of the ratio of erythroid cells compared to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
SARS-CoV-2 Spike Protein Antibody Measurement
The determination of the amount of SARS-CoV-2 spike protein antibody in a sample.
Klebsiella Measurement
The determination of the amount of Klebsiella in a sample.
Type 2 Innate Lymphoid Cell Subpopulation to Type 2 Innate Lymphoid Cell Subpopulation Ratio Measurement
The determination of the ratio of a sub-population of type 2 innate lymphoid cells to a sub-population of type 2 innate lymphoid cells present in a sample. The measurement may be expressed as a ratio or percentage.
Allergen Skin Response Intensity Measurement
The semiquantitative assessment of the wheal-and-flare index that measures the intensity of the reaction.
Birch Pollen IgE Measurement
A measurement of the birch pollen IgE in a biological specimen.
Serum Chloride Measurement
A quantitative measurement of the amount of chloride present in a sample of serum.
Hepatocyte Count
The determination of the number of hepatocytes present in a sample.
Dietary Docosahexaenoic Acid Measurement
A determination of the total 22:6 docosahexaenoic acid in a nutritional product or meal, or a portion thereof.
Trypsin and Trypsinogen Measurement
The determination of the amount of the total trypsin and total trypsinogen in a biological specimen.
Gut-Homing Cytotoxic Effector Memory T-Lymphocyte Subpopulation to Cytotoxic T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of gut-homing cytotoxic effector memory T-lymphocytes to total cytotoxic T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Naive Helper T-Lymphocyte Subpopulation to Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of T-lymphocytes helper naive sub-population to T-lymphocytes helper present in a sample. The measurement may be expressed as a ratio or percentage.
PGMY09/PGMY11 PCR Assay
A PCR technique that uses a pool of 5 upstream and 13 downstream primers, which are based on the binding sites for the MY09/MY11 degenerate primer set, for HPV detection. It amplifies a 450 bp region from the L1 region of the HPV genome.
Thyroxine Binding Globulin Protein Measurement
The determination of the amount of thyroxine binding globulin protein present in a sample.
Dietary Nuts and Seeds Measurement
A determination of the total nuts and seeds in a nutritional product or meal, or a portion thereof.
Platelet Count
The determination of the number of platelets in a biospecimen.
Functional Fibrinogen Measurement
The determination of the amount of functional fibrinogen present in a sample.
Cell Culture Procedure
Any laboratory procedure for growing cells or tissues in vitro.