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.

Giant Platelet Count
The determination of the number of giant platelets present in a sample.
Dehydroepiandrosterone Measurement
The determination of the amount of dehydroepiandrosterone hormone present in a sample.
MicroRNA Measurement
A determination of the amount of microRNA in a biological sample.
Lactate to Creatine Ratio Measurement
The determination of the ratio of lactate compared to creatine present in a sample. The measurement may be expressed as a ratio or percentage.
Skin-Homing Helper Central Memory T-Lymphocyte Subpopulation to Helper Central Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of skin-homing helper central memory T-lymphocytes to total helper central memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Skin-Homing Helper Terminal Memory T-Lymphocyte to Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of the skin-homing helper terminal memory T-lymphocytes to total helper T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Dendritic Cell to Non-TBNK Leukocyte Ratio Measurement
The determination of the ratio of dendritic cells to leukocytes that are not T cells, B cells or natural killer cells present in a sample. The measurement may be expressed as a ratio or percentage.
Leukocyte Esterase Measurement
A quantitative measurement of the amount of leukocyte esterase present in a sample.
Pigment Cast Measurement
The determination of the amount of pigment casts present in a sample.
Osteopontin to Creatinine Ratio Measurement
The determination of the ratio of osteopontin compared to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
Breast Cancer Type 1 Susceptibility Protein Measurement
The determination of the amount of breast cancer type 1 susceptibility protein present in a sample.
Calcium Corrected Measurement
The determination of the amount of the calcium corrected in a biological specimen.
Creatine Kinase BB to Total Creatine Kinase Ratio Measurement
The determination of the ratio of creatine kinase BB compared to total creatine kinase present in a sample. The measurement may be expressed as a ratio or percentage.
3-Hydroxyphenanthrene Measurement
The determination of the amount of 3-hydroxyphenanthrene in a sample.
S-Adenosylhomocysteine Measurement
The determination of the amount of S-adenosylhomocysteine in a sample.
Anion Gap 3 Measurement
The determination of the amount of unmeasured anions (computed as sodium minus the chloride and bicarbonate) present in a sample.
Azurophilic Granule Measurement
The determination of the amount of azurophilic granules present in a sample.
Hepatitis A Virus Antibody IgM Measurement
The determination of the amount of Hepatitis A virus antibody IgM present in a sample.
Malassezia Species IgE Antibody Measurement
The determination of the amount of Malassezia species IgE antibody present in a sample.
Dengue Virus Antibody Measurement
The determination of the amount of Dengue virus antibody present in a sample.
Sodium to Creatinine Ratio Measurement
The determination of the ratio of sodium compared to creatinine present in a sample. The measurement may be expressed as a ratio or percentage.
Taurine Measurement
The determination of the amount of taurine present in a sample.
Non-TBNK Leukocyte Count
The determination of the number of leukocytes that are not T-cells, B-cells, or natural killer cells present in a sample.
Free Estradiol to Estradiol Ratio Measurement
The determination of the ratio of free estradiol compared to total estradiol present in a sample. The measurement may be expressed as a ratio or percentage.
