Testosterone (Free): normal range and what it means
The biologically active fraction of testosterone.
Normal range
This marker’s healthy range depends on sex and age.
| Normal range | Men | Women |
|---|---|---|
| Low | < 47 pg/mL | < 0.3 pg/mL |
| Normal | 47 – 244 pg/mL | 0.3 – 3.2 pg/mL |
| High | ≥ 244 pg/mL | ≥ 3.2 pg/mL |
What it measures
The fraction of testosterone not bound to protein and therefore available to your tissues. It often explains symptoms better than the total does, especially when SHBG is unusual.
What moves it
The fraction not bound to SHBG, so it moves with sleep, body fat, training load, alcohol and age. Draw timing matters — it peaks in the morning.
How to bring it into range
Sleep, resistance training, body fat and alcohol all move it. Test in the morning, when levels peak.
How fast it responds
Eight to twelve weeks.
Also reported as: free testosterone
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Common questions
- What is a normal Testosterone (Free) level?
- Normal: 47 – 244 pg/mL. This marker’s healthy range depends on sex and age.
- What does a high Testosterone (Free) mean?
- A value above the reference band means Testosterone (Free) is outside the range typical for a healthy adult. A single reading is rarely conclusive on its own — what matters is the trend across draws and the other markers around it, which is why HealthOS reads the whole panel together rather than one number at a time.
- How do I improve my Testosterone (Free)?
- Sleep, resistance training, body fat and alcohol all move it. Test in the morning, when levels peak.
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Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.