Test guide
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.
What it is for
A testosterone levels test may be used with other tests to help your provider find the cause of abnormal testosterone levels. It can also be used to monitor your health if you: In children and teens, your provider may use a testosterone levels test to figure out what's causing early or delayed puberty. Source: MedlinePlus, National Library of Medicine. Medical test information is public domain. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Limitations
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also known as
- serum testosterone, total testosterone, free testosterone, bioavailable testosterone
Reviewed products
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