range

Free & Bioavailable Testosterone Calculator Looking at the chart for 20-30 years old. The reference range for bioavaible T is 83-257ng/dL, for free T it’s 5.25-20.7ng/dL. Translated that means a man in his twenties with a total testosterone of only 187 ng/dL (6.5 nmol/L) and 30 nmol/L SHBG is...