Information about a laboratory test
Testosterone levels are much lower in females than males; higher results may be interpreted with menstrual changes, acne, or excess hair growth.
Measures total testosterone in the blood; testosterone is present in both males and females.
Used to evaluate symptoms of low testosterone in males, androgen excess in females, infertility, and pubertal disorders.
Low testosterone depends on sex, age, and sampling time; in males, a low result is often confirmed with a repeat morning measurement.
High testosterone in females may accompany androgen-excess features; in males, medicines/supplements and less common causes are considered.
Use the reference interval printed on your own laboratory report first. Hormone results may vary with the assay, age, sex, pregnancy, menstrual-cycle phase, and sampling time.
>= 249 – <= 836 ng/dL
Example reference interval
This is an example total-testosterone interval from the cited source. Age, sex, assay method, and especially sampling time can affect interpretation.
>= 193 – <= 740 ng/dL
Example reference interval
This is an example total-testosterone interval from the cited source. Age, sex, assay method, and especially sampling time can affect interpretation.
>= 8.4 – <= 48.1 ng/dL
Example reference interval
This is an example total-testosterone interval from the cited source. Age, sex, assay method, and especially sampling time can affect interpretation.
>= 2.9 – <= 40.1 ng/dL
Example reference interval
This is an example total-testosterone interval from the cited source. Age, sex, assay method, and especially sampling time can affect interpretation.
Reference ranges may vary by laboratory, method used, age, sex, pregnancy status, and clinical context. The reference range on your own laboratory report takes precedence.
Most testosterone is protein-bound. If total testosterone does not fit the clinical picture, SHBG/free-testosterone context may be useful; sampling time matters.
Follicle-Stimulating Hormone (FSH) Levels Test — U.S. National Library of Medicine (MedlinePlus)
Government medical reference · 2023 · FSH use with LH, estrogen, testosterone and progesterone · Verified: Aug 11, 2026
Luteinizing Hormone (LH) Levels Test — U.S. National Library of Medicine (MedlinePlus)
Government medical reference · 2023 · LH function and use with FSH and reproductive hormones · Verified: Aug 11, 2026
Testosterone Levels Test — U.S. National Library of Medicine (MedlinePlus)
Government medical reference · 2025 · Total, free and bioavailable testosterone testing · Verified: Aug 12, 2026
Testosterone — U.S. National Library of Medicine (MedlinePlus)
Government medical encyclopedia · 2026 · Age- and sex-specific example total-testosterone values · Verified: Aug 11, 2026
Tanitedavi.com is a Biruni Teknopark project. BETA