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.

Macrophage to Monocyte Ratio Measurement
The determination of the ratio of macrophages to monocytes present in a sample. The measurement may be expressed as a ratio or percentage.
VLDL Apolipoprotein B Measurement
The determination of the amount of the apolipoprotein B in the very low density lipoprotein fraction of a biological specimen.
Skin-Homing Helper Effector Memory T-Lymphocyte Subpopulation to Skin-Homing Helper Effector Memory T-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of skin-homing helper effector memory T-lymphocytes to total skin-homing helper effector memory T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Mutant Huntingtin Protein Measurement
The determination of the amount of mutant huntingtin protein present in a sample.
Aeromonas Measurement
A measurement of the organisms that are not assigned to the species level but are assigned to the Aeromonas genus level in a sample.
Type 2 Innate Lymphoid Cell Subpopulation Count
A measurement of a sub-population of type 2 innate lymphoid cells present in a sample.
Soluble Kidney Injury Molecule-1 Measurement
The determination of the amount of soluble kidney injury molecule-1 present in a sample.
Plasmacytoid Dendritic Cell to Leukocyte Ratio Measurement
The determination of the ratio of plasmacytoid dendritic cells to leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Dermatophagoides farinae Antigen IgE Antibody Measurement
A measurement of the Dermatophagoides farinae antigen IgE antibody in a biological specimen.
Testosterone Measurement
The determination of the amount of testosterone present in a sample.
Inclusion Body Measurement
A measurement of the protein, lipid or small molecule aggregates located within the cytoplasm.
Proinsulin to Insulin Ratio Measurement
The determination of the ratio of the proinsulin compared to insulin present in a sample. The measurement may be expressed as a ratio or percentage.
Precursor B-Lymphocyte Count
The determination of the precursor B-lymphocytes present in a sample.
CD4, CD25, FOXP3 Expressing Regulatory T-Lymphocyte Count
The determination of the number of regulatory T-lymphocytes expressing CD4, CD25 and FOXP3 present in a sample.
Effector T-Lymphocyte Count
The determination of the number of effector T-lymphocytes in a sample.
CD8 Expressing T Cell Count
The determination of the number of CD8 expressing T cells present in a sample.
Monocyte to Lymphocyte and Monocyte Ratio Measurement
The determination of the ratio of monocytes to lymphocytes and monocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Polychromatic Erythrocyte Count
The determination of the polychromatic erythrocytes in a sample.
HLA Class I Antibody Measurement
The determination of the amount of HLA class I antibody present in a sample.
Abbott Architect SARS-CoV-2 IgG Serology Assay
A proprietary chemiluminescent microparticle immunoassay (CMIA) used for the qualitative detection of IgG antibodies to SARS-CoV-2 in human serum and plasma on the Abbott ARCHITECT i system. The persistence of immunoglobulin class G (IgG) antibodies may identify people who have been infected in the past, recovered from the illness, and possibly developed immunity.
Human Parainfluenza Virus 1 Measurement
The determination of the amount of Human parainfluenza virus 1 in a biological sample.
Myeloid-Derived Suppressor Cell to Non-Granulocytic Leukocyte Ratio Measurement
The determination of the ratio of the myeloid-derived suppressor cells to total non-granulocytic leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Perforin-1 Measurement
The determination of the amount of perforin-1 in a sample.
Hemoglobin C to Total Hemoglobin Ratio Measurement
The determination of the ratio of Hemoglobin C compared to total Hemoglobin present in a sample. The measurement may be expressed as a ratio or percentage.
