Tests
Testosterone Levels Test
A testosterone levels test measures the amount of the hormone testosterone in a sample of your blood. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs.
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A testosterone levels test measures the amount of the hormone testosterone in a sample of your blood. Hormones are chemical messengers in your bloodstream that control the actions of certain cells or organs.
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Article
Research record from Beijing Da Xue Xue Bao Yi Xue Ban, 2026-04-01. PMID 41978404.
Article
Research record from Reprod Sci, 2026-08-04. PMID 42552471.
Article
Research record from Clin Chem Lab Med, 2026-10-09. PMID 42849045.
Indicators
A steroid hormone synthesized by the adrenal glands and the gonads from either 17-alpha-hydroxyprogesterone or dehydroepiandrosterone and is a precursor of testosterone.
Tests
The determination of the amount of bioavailable testosterone present in a sample.
Indicators
An animal sterol found in the body tissues (and blood plasma) of vertebrates. It can be found in large concentrations within the liver, spinal cord, and brain. Cholesterol is an important component of the membranes of cells, providing stability. It is the major precursor for the synthesis of vitamin D, of the various steroid hormones, including cortisol, cortisone, and aldosterone in the adrenal glands, and of the sex hormones progesterone, estrogen, and testosterone. Cholesterol also has an important role for the brain synapses as well as in the immune system. In conditions featuring elevated low density lipoproteins (LDL), cholesterol often forms plaque deposits in the walls of arteries, a condition known as atherosclerosis, which is a major contributor to coronary heart disease and other forms of cardiovascular disease.
Article
Research record from Drug Test Anal, 2026-05-20. PMID 42161412.
Tests
This test measures the levels of DHEA sulfate (DHEAS) in your blood. DHEAS stands for dehydroepiandrosterone sulfate. DHEAS is mostly made in the adrenal glands, two small glands located above your kidneys. Your adrenal glands help control your heart rate, blood pressure, and other body functions. They make different types of hormones you need to stay healthy. This includes cortisol, a hormone that helps with your immune system , and DHEAS, a steroid hormone.
Indicators
The most potent androgen, required for sex development. Dihydrotestosterone is synthesized from testosterone in the prostate gland, testes, hair follicles and adrenal glands by 5-alpha reductase. Dihydrotestosterone exerts its action similar to testosterone, which binds to and activates specific nuclear androgen receptors. After translocation into the nucleus, the activated hormone-receptor complex binds to the androgen response elements on the DNA and activates gene expressions that are required for sex development. Dihydrotestosterone is responsible for the formation of male primary sex characteristics and most male secondary sex characteristics during puberty, such as muscular growth, facial and body hair growth, and deepening of the voice.
Tests
The determination of the amount of free testosterone present in a sample.