Testosterone
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.
A testosterone levels test may be used with other tests to help your provider find the cause of abnormal testosterone levels.
Source: MedlinePlus, U.S. National Library of Medicine
Normal range
- 14 y – 15 y
- 33–585 ng/dL
- 16 y – 17 y
- 185–886 ng/dL
- 18 y – 39 y
- 300–1080 ng/dL
- 40 y – 59 y
- 300–890 ng/dL
- 60 y+
- 300–720 ng/dL
- Female · ≤ 5 mo
- 20–80 ng/dL
- Female · 17 y – 18 y
- 20–75 ng/dL
- Female · 19 y+
- 8–60 ng/dL
- Female
- 18–54 ng/dL
- Male · ≤ 5 mo
- 75–400 ng/dL
- Male · 15 y – 16 y
- 100–1200 ng/dL
- Male · 17 y – 18 y
- 300–1200 ng/dL
- Male · 19 y+
- 240–950 ng/dL
- Male
- 291–1100 ng/dL
Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Test Catalog).
All 23 source ranges
What an abnormal result can be associated with
- A high result
- Increased serum testosterone level
- A low result
- Decreased serum testosterone concentration
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis — only a clinician can interpret your result in context.
Details
- Sample
- Serum or plasma · LOINC
- Collection
- 1 mL · Mayo Clinic Laboratories (Test Catalog)
- Part of
- Bryan Johnson Blueprint
- Listed under
- Erectile Dysfunction · Hormones · Male Infertility · Men's Health · Sexual Health · Sexual Problems in Men · Teen Sexual Health · Testicular Disorders
- Code
- LOINC 2986-8 · ng/dL
- Also known as
- Testos, Testo, Testost