Quick Reference
- Full form
- Free Testosterone Level
- Sample type
- Blood
- Fasting
- Not required
- Marker measured
- 1
- Report turnaround
- After 2 days
- Available at
- All locations
About Free Testosterone Level
Free testosterone measures the portion of testosterone that is biologically active and not bound to proteins, giving a more precise picture than total testosterone alone, particularly useful for men with symptoms of low testosterone.
No fasting is required, though morning testing is generally preferred since testosterone levels peak earlier in the day. Results are available after 2 days.
How to Prepare
- Morning sample is preferred, as testosterone naturally peaks earlier in the day.
- No fasting required.
Frequently Asked Questions
Why test free testosterone instead of total?
Free testosterone measures the biologically active portion, giving a more precise picture, especially for men with symptoms of low testosterone.
Do I need to fast before this test?
No fasting is required, though a morning sample is generally preferred.
Why does time of day matter for this test?
Testosterone levels naturally peak in the morning, so testing then gives a more representative reading.
What symptoms suggest low testosterone?
Fatigue, reduced muscle mass, low libido, and mood changes are common symptoms that prompt this test.
How soon will my report be ready?
After 2 days.
Is home sample collection available?
Yes, ideally scheduled for morning collection, in all City Care Lab service areas.
This page provides general health information and is not a substitute for medical advice. Speak with your doctor about your specific results and treatment.