Normal total testosterone in adult men ranges roughly 300–1,000 ng/dL, and it gradually declines with age — from an average near 600–700 ng/dL in your 20s to 400–500 ng/dL by your 60s. “Normal” and “optimal” aren’t the same; symptoms plus labs guide treatment.
Testosterone levels by age (approximate total, ng/dL)
| Age | Typical range |
|---|---|
| 20s | 500–900 |
| 30s | 450–850 |
| 40s | 400–800 |
| 50s | 350–750 |
| 60s+ | 300–700 |
Ranges vary by lab. Testosterone drops about 1% per year after age 30.
Normal vs optimal
You can be “in range” but still symptomatic. Many men feel best in the upper-normal band, which is why treatment is guided by symptoms and free testosterone, not just the total number.
FAQ
What is a low testosterone level?
Below ~300 ng/dL is generally considered low, but symptoms matter.
Should I test in the morning?
Yes — testosterone peaks in the morning, so testing before ~10am is standard.
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