Free Testosterone
What It Is
Free testosterone is the unbound, biologically active fraction of total testosterone.
Why It Matters
Free testosterone gives a clearer picture of androgen activity than total testosterone alone.
If Levels Are High
Elevated free testosterone in women may indicate PCOS. In men, it is less commonly a concern.
If Levels Are Low
Low free testosterone in men can cause fatigue, low libido, and reduced muscle mass.
Preparation
Morning sample recommended (before 10am). Fasting may be advised.
How Often to Test
As clinically indicated, typically when symptoms of hormonal imbalance are present.
Panels Including This Marker
Test Your Free Testosterone Levels
Book a quick appointment at our Edinburgh clinic
Important Disclaimer
This information is for educational purposes only and does not constitute medical advice or diagnosis. Results should be interpreted in clinical context by a qualified healthcare professional. If you have severe symptoms or urgent concerns, seek urgent medical help.