How much full testosterone is 10.3 ng/dL free testosterone?
Only 1 to 2% of circulating testosterone around your body is classified as free testosterone. An average of 80% of testosterone found in men is bound to sex hormone-binding globulin (SHBG), while smaller percentages are bound to albumin and cortisol-binding globulin
Serum Testosterone Test, Total Testosterone, Bioavailable Testosterone