hormones · T · TT
Total Testosterone
The main male sex hormone (also present in smaller amounts in women), important for muscle, bone, libido, and energy. Levels vary by time of day — morning samples are preferred — and decline gradually with age in men.
This page is general wellness education, not medical advice. Your own lab’s reference range and your clinician’s interpretation always take precedence.
Typical reference range
| Group | General range |
|---|---|
| Men | ~264–916 ng/dL in healthy young men (harmonized range) |
| Women | 8 – 60 ng/dL |
Units: ng/dL. Ranges vary by lab and assay — read yours against the range printed on your own report.
What high Total Testosterone can mean
- Testosterone therapy/supplements
- PCOS (in women)
- Certain adrenal/ovarian conditions
What low Total Testosterone can mean
- Aging
- Obesity / metabolic syndrome
- Pituitary or testicular problems
- Chronic illness
- Poor sleep
- Some medications