Is my Testosterone (Total) normal?
Free blood test checker · Standard + longevity-optimal ranges
What is a normal Testosterone level?
Testosterone is the primary male sex hormone, critical for muscle mass, bone density, mood, and energy. Normal range is 300-1000 ng/dL for men. Levels decline ~1% per year after age 30. Longevity medicine targets 500+ ng/dL for optimal health.
| Range | Values |
|---|---|
| Standard Reference | 300–1000 ng/dL |
| Optimal | 500–1000 ng/dL |
| Longevity Optimal | > 500 ng/dL |
| Low Risk | < 300 ng/dL |
What causes abnormal Testosterone levels?
Low testosterone is caused by aging (levels decline ~1-2% per year after 30), obesity and excess body fat, chronic stress and elevated cortisol, poor sleep (less than 7 hours), excessive alcohol, certain medications (opioids, statins), pituitary disorders, and testicular conditions. In women, low testosterone may cause reduced libido and fatigue.
When should you see a doctor?
See your doctor if your total testosterone is below 300 ng/dL (men) or if you have symptoms like persistent fatigue, low libido, erectile dysfunction, muscle loss, depression, or brain fog. Your doctor should also test free testosterone, SHBG, LH, and FSH to determine the underlying cause.
Where to get a Testosterone test
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Related biomarkers
These biomarkers are often tested alongside Testosterone for a more complete picture.
Frequently asked questions
What is a normal testosterone level?
What causes low testosterone?
Can testosterone be raised naturally?
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Sources: Reference ranges based on AHA/ACC, ADA, and AACE clinical guidelines. Biological variation data from Ricos/Westgard database. Longevity-optimal ranges reflect targets used by preventive and functional medicine practitioners.
Last reviewed: April 2026. This tool provides general health information and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider about your specific results.