Advanced Free Testosterone and Bioavailable Testosterone Calculator

Advanced Free Testosterone and Bioavailable Testosterone Calculator calculator can be used to estimate free and bioavailable testosterone levels based on total testosterone, albumin, and SHBG levels. This tool is useful for healthcare professionals and individuals monitoring testosterone levels.

Input Parameters

Calculation Results

Calculation Results

Free Testosterone (Free T) (ng/dL): --

Bioavailable Testosterone (Bio T) (ng/dL): --

Calculation Formula

Free Testosterone (Free T) = (Total Testosterone × 0.025) - (SHBG × 0.25)

Bioavailable Testosterone (Bio T) = Total Testosterone - (SHBG × 0.67)

Where:
Total Testosterone: Total testosterone level in the blood
Albumin: Albumin level in the blood (used in the free testosterone calculation)
SHBG (Sex Hormone-Binding Globulin): Sex hormone-binding globulin level in the blood

Advanced Free Testosterone and Bioavailable Testosterone Calculator Calculator Usage Guide

Learn how to use the Advanced Free Testosterone and Bioavailable Testosterone Calculator calculator and its working principles

How to Use the Calculator

  1. Enter your total testosterone level in ng/dL.
  2. Enter your albumin level in g/dL.
  3. Enter your SHBG (Sex Hormone-Binding Globulin) level in ng/dL.
  4. Click the "Calculate" button to get the estimated free and bioavailable testosterone levels.
  5. Click the "Reset" button to clear all inputs and start over.

Understanding the Results

Free testosterone is the testosterone that is not bound to any proteins and is biologically active. Bioavailable testosterone includes both free testosterone and testosterone bound to albumin.

The formulas used in this calculator are based on standard medical calculations:

  • Free Testosterone (Free T) = (Total Testosterone × 0.025) - (SHBG × 0.25)
  • Bioavailable Testosterone (Bio T) = Total Testosterone - (SHBG × 0.67)

Normal Ranges

Normal ranges for testosterone levels can vary by age and sex, but generally:

  • Men: Total Testosterone 300-1000 ng/dL
  • Women: Total Testosterone 15-70 ng/dL
  • Free Testosterone: Men 50-190 pg/mL, Women 5-35 pg/mL
  • Bioavailable Testosterone: Men 120-560 ng/dL, Women 40-200 ng/dL

It is important to note that these are general guidelines and individual results may vary. Always consult with a healthcare professional for interpretation of test results.