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.
Plasmablast Subpopulation to B-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of plasmablasts to B-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Endothelin-3 Measurement
The determination of the endothelin-3 in a sample.
Type 1 Innate Lymphoid Cell to Innate Lymphoid Cell Ratio Measurement
The determination of the ratio of type 1 innate lymphoid cells to total innate lymphoid cells present in a sample. The measurement may be expressed as a ratio or percentage.
Streptococcus pneumoniae Serotype 10A IgG Antibody Measurement
The determination of the amount of Streptococcus pneumoniae serotype 10A IgG antibody present in a sample.
Cancer Antigen 72-4 Measurement
The determination of the amount of the cancer antigen 72-4 present in a sample.
Candida parapsilosis Measurement
A measurement of Candida parapsilosis in a sample.
Steroid Sulfatase Activity Measurement
The determination of the amount of steroid sulfatase activity present in a sample.
Serine Measurement
The determination of the amount of serine present in a sample.
Pneumocystis jiroveci Measurement
The determination of the Pneumocystis jiroveci in a sample.
Glutamine to Creatine Ratio Measurement
The determination of the ratio of glutamine compared to creatine present in a sample. The measurement may be expressed as a ratio or percentage.
CD269 Expression Measurement
The determination of the amount of CD269 Expression present in a sample.
Scored Erythrocyte Count
A measurement of the total number of erythrocytes that are scored.
Dietary Tomatoes Measurement
A determination of the tomatoes in a nutritional product or meal, or a portion thereof.
Campylobacter DNA Measurement
The determination of the amount of DNA from any member of the genus Campylobacter in a biological sample.
HDL Cholesterol to LDL Cholesterol Ratio Measurement
The determination of the ratio of HDL cholesterol compared to LDL cholesterol present in a sample. The measurement may be expressed as a ratio or percentage.
Streptococcus pneumoniae Serotype 5 IgG Antibody Measurement
The determination of the amount of Streptococcus pneumoniae serotype 5 IgG antibody present in a sample.
Helper 9 T-Lymphocyte Count
The determination of the number of helper 9 T-lymphocytes in a sample.
Classical Memory B-Lymphocyte Subpopulation to Classical Memory B-Lymphocyte Ratio Measurement
The determination of the ratio of a sub-population of classical memory B-lymphocytes to all classical memory B-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Free PSA to Total PSA Ratio Measurement
The determination of the ratio of free prostate specific antigen as compared to the total prostate specific antigen present in a sample. The measurement may be expressed as a ratio or percentage.
Plasmodium Measurement
The determination of the amount of Plasmodium present in a sample.
T-Cell Surface Glycoprotein CD4 Measurement
The determination of the amount of T-cell surface antigen T4/Leu-3 in a sample.
CD117 Expression Measurement
The determination of cellular CD117 expression in a biological specimen.
HIV-1 p24 Antibody Measurement
The determination of the amount of HIV-1 p24 antibody present in a sample.
Mycoplasma pneumophila IgG Antibody Measurement
The determination of the amount of Mycoplasma pneumophila IgG antibody present in a sample.