Testosterone (Free)
in Serum
Also known as:
Free testosterone
S-fTST
Enter value to interpret your result
Optimal Testosterone (Free) reference ranges for longevity
- According to Peter Attia, Testosterone (Free) should be:
- between 4 and 24 pg/mL for males
- between 2 and 10 pg/mL for females
To see these ranges in your preferred unit, enter your lab result above.
This page is marked as a work-in-progress. Expect updates and a redesign soon.
About the site author
My personal mission is to extend human lifespan by collectively adding 1 million years to people's lives.
Zsolt SzaboSoftware Engineer, Biohacker, and Consultant for Longevity Clinics.
Please send me studies and feedback.
Any feedback is welcome at .
I am particularly interested in research on biomarkers linked to all-cause mortality or optimal reference ranges.