Dehydroepiandrosterone sulfate (DHEA-S) is a steroid hormone produced and secreted by the adrenal cortex. In women, about 5% is also synthesized in the ovaries. It is produced as a complex sulfate ester. Most is broken down in the body, with approximately 10% excreted in urine.
D-dimer is a protein fragment formed in blood plasma after fibrin breakdown following thrombus rupture.
Red blood cells contain a system of inherited traits (agglutinogens) formed during embryogenesis, remaining unchanged throughout a person’s life. The presence or absence of agglutinogens A, B, O, and antibodies-agglutinins α, β determines a person’s blood group. Each group has specific inherited
The analysis consists of a series of tests aimed at detecting antibodies (immunoglobulins) to certain viruses. The procedure includes testing for HIV, detecting antibodies to the syphilis pathogen, hepatitis B, and hepatitis C.
Homocysteine is an amino acid, a cysteine homolog, synthesized from methionine by removing the terminal methyl group. In blood plasma, it’s protein-bound, with most undergoing remethylation to form methionine.
Glucose deficiency over time leads to severe cardiovascular and neurological complications, vision loss, and obesity.
Sex hormone-binding globulin (SHBG) is a blood plasma glycoprotein that binds sex steroids, regulates their activity, and transports them to organs and tissues.
Presence of hepatitis B surface antigen (HBsAg) in blood indicates a positive infection reaction. HBsAg, the virus’s outer shell’s molecular basis, resists various physicochemical impacts, surviving repeated freezing and thawing.
The presence of IgM-class antibodies in human blood indicates infectious viral hepatitis A.
Gamma-interferon is a glycoprotein with a molecular weight of 20-25 kDa.