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.
Serum Phosphate Measurement
A quantitative measurement of the amount of phosphate present in a sample of serum.
Dietary Beta Carotene Measurement
A determination of the beta carotene in a nutritional product or meal, or a portion thereof.
Fentanyl Measurement
The determination of the amount of fentanyl present in a sample.
Triple Phosphate Crystal Measurement
The determination of the amount of triple phosphate crystals present in a urine sample.
Helper 17.1 T-Lymphocyte to Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of T-lymphocytes helper 17.1 to T-lymphocytes helper present in a sample. The measurement may be expressed as a ratio or percentage.
Hemoglobin Measurement
A quantitative measurement of the amount of hemoglobin present in a biospecimen.
Clot Initiation Time Measurement
The determination of the elapsed time from the addition of the clot activating agent to the start of clot formation.
Mast Cell to Total Cell Ratio Measurement
The determination of the ratio of the mast cells compared to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
Proinflammatory Monocytes Count
The determination of the pro-inflammatory monocytes in a biospecimen.
Alpha-Beta T-Lymphocyte Subpopulation to Alpha-Beta T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of alpha-beta T-lymphocytes to total alpha-beta T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Human rhinovirus A, B, and/or C Antigen Measurement
The determination of the amount of Human rhinovirus A, B and/or C antigen in a biological sample.
Varicella Zoster Virus IgM Antibody Measurement
The determination of the amount of varicella zoster virus IgM antibody present in a sample.
HDL Phospholipid Measurement
The determination of the amount of high-density lipoprotein phospholipid present in a sample.
Catecholamine Measurement
The determination of the amount of total catecholamines present in a sample.
Blood Protein Measurement
A quantitative measurement for assessing the amount of protein present in a blood sample.
Glycogen Normalized for Tissue Water Volume Measurement
A measurement of glycogen normalized for tissue water volume, in a sample.
Type 2 Innate Lymphoid Cell Count
A measurement of type 2 innate lymphoid cells present in a sample.
Thyroid Stimulating Immunoglobulin Autoantibody Measurement
The determination of the amount of thyroid stimulating immunoglobulin autoantibody present in a sample.
West Nile Virus Antibody Measurement
The determination of the amount of West Nile virus antibody present in a sample.
Bone Specific Alkaline Phosphatase Measurement
The determination of the amount of bone specific alkaline phosphatase present in a sample.
Adenosine Diphosphate Measurement
The determination of the amount of adenosine diphosphate present in a sample.
Chikungunya Virus RNA Measurement
The determination of the amount of chikungunya virus RNA present in a sample.
Reactive Oxygen Metabolite Measurement
The determination of the amount of reactive oxygen metabolite present in a sample.
Agranular Platelets Count
The determination of the amount of agranular platelets present in a sample.