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.

Gut-Homing Cytotoxic Effector Memory T-Lymphocyte Subpopulation to Gut-Homing Cytotoxic Effector Memory T-Lymphocyte Subpopulation Ratio Measurement
The determination of a sub-population of gut-homing cytotoxic effector memory T-lymphocytes to a sub-population of gut-homing cytotoxic effector memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Basophil to Total Cell Ratio Measurement
The determination of the ratio of basophils compared to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
HCoV-NL63 RNA Measurement
The determination of the amount of Human coronavirus NL63 RNA in a biological sample.
Interleukin 1 Receptor Measurement
The determination of the amount of interleukin 1 receptor in a sample.
Memory Helper T-Lymphocyte Count
The determination of the number of helper memory T-lymphocytes in a sample.
Regulatory Memory B-Lymphocyte Subpopulation to B-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of regulatory memory B-lymphocytes to total B-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Monocytoid Cell Count
The determination of the amount of monocytoid cells present in a sample.
Activated Lymphocytes Measurement
The determination of the amount of activated lymphocytes in a biological specimen.
Conventional T-Lymphocyte Subpopulation to Conventional T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of conventional T-lymphocytes to conventional T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Smith Antibody Measurement
The determination of the amount of Smith antibody present in a sample.
Effector Memory Cytotoxic T-Lymphocyte Subpopulation to Effector Memory Cytotoxic T-Lymphocyte Subpopulation Ratio Measurement
The determination of a sub-population of cytotoxic effector memory T-lymphocytes to a sub-population of cytotoxic effector memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Monomethylarginine Measurement
The determination of the amount of monomethylarginine present in a sample.
Ketone Measurement
A quantitative measurement of the amount of ketones present in a sample.
11-Deoxycortisol Measurement
The determination of the amount of 11-deoxycortisol present in a sample.
Cytotoxic Exhausted Precursor T-Lymphocyte Subpopulation to Cytotoxic Exhausted Precursor T-Lymphocyte Ratio Measurement
The determination of a sub-population of cytotoxic exhausted precursor T-lymphocytes to the total cytotoxic exhausted precursor T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Cholesterol to HDL-Cholesterol Ratio Measurement
The determination of the ratio of total cholesterol compared to high-density lipoprotein type cholesterol present in a sample. The measurement may be expressed as a ratio or percentage.
Endostatin Measurement
The determination of the amount of endostatin in a sample.
Eccentrocyte Count
The determination of the amount of eccentrocytes present in a sample.
Skin-Homing Helper Memory T-Lymphocyte Subpopulation to Helper T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of skin-homing helper memory T-lymphocytes to total helper T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Renal Epithelial Cells Measurement
The determination of the amount of renal epithelial cells present in a sample.
Varicella Zoster Virus DNA Measurement
The determination of the amount of Varicella Zoster virus DNA in a biological sample.
Egg White Antigen IgE Antibody Measurement
The determination of the amount of egg white antigen IgE antibody present in a sample.
Immature Natural Killer Cell Subpopulation to Immature Natural Killer Cell Ratio Measurement
The determination of the ratio of a sub-population of immature natural killer cells to total immature natural killer cells present in a sample. The measurement may be expressed as a ratio or percentage.
Escitalopram Measurement
The determination of the escitalopram in a sample.
