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Bio-T Testosterone calculator

Bio-T Testosterone calculator

by Niedertronics

41 ratings
9 reviews
🏥 Medical
Free

Details

  • Released
  • Updated
  • March 27, 2009
  • February 9, 2026

Features

Developer

Niedertronics
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Bio-T Testosterone calculator screenshot #1 for iPhone
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About

This medical tool calculates bioavailable and free testosterone levels using total testosterone, SHBG, and albumin. It's based on a published algorithm and is designed for use by qualified healthcare professionals.

✓Calculates bioavailable testosterone
✓Calculates free testosterone
✓Uses total testosterone, SHBG, and albumin
✓Based on published algorithm
✓Intended for healthcare professionals
Show original description

What's New in Bio

2.0

February 9, 2026

Completely rebuilt for modern iOS. New interface, same trusted Vermeulen algorithm.

User reviews

Most RecentHighest RatedLowest Rated

Needs updated

Will not work with iOS11
robatemanrobateman

Great App!

Great, simple and easy to use application!
JJUROMDJJUROMD

Needs to accept SI units

Not a useful app at all if you have test results in SI units. Online calculators allow you to choose units, so should this app.
KKTOKKTO

Superb

This has to be the best handheld application for determining bioavailable testosterone levels ever written. Ignore those over priced competitors, use this app!
Alopecia PrimeAlopecia Prime

International units

A version of this app with international units would be greatly appreciated.
Julien LetendreJulien Letendre
See 4 more reviews

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FAQ

What is Bio-T Testosterone calculator used for?

Bio-T Testosterone calculator is used to calculate bioavailable and free testosterone levels from total testosterone, SHBG, and albumin. It is intended for use by qualified healthcare professionals.

What is the scientific basis for Bio-T Testosterone calculator?

The application is an adaptation of the algorithm published in Vermeulen A, Verdonck L, Kaufman JM: A Critical Evaluation of Simple Methods for the Estimation of Free Testosterone in Serum, J. Clin. Endocrinol. Metab. Oct 1, 1999; 84: 3666-3672.

Who is the target audience for Bio-T Testosterone calculator?

This application is intended for use by qualified healthcare professionals who require estimations of testosterone levels in their practice.

Is Bio-T Testosterone calculator free to use?

Yes, Bio-T Testosterone calculator is available for free.

What devices does Bio-T Testosterone calculator support?

Bio-T Testosterone calculator currently supports iPhone devices.

How often is Bio-T Testosterone calculator updated?

The latest version, 2.0, was released on February 9, 2026, indicating ongoing development and updates.

What is the user rating for Bio-T Testosterone calculator?

Bio-T Testosterone calculator has a rating of 2.5 stars from 41 ratings.

Does Bio-T Testosterone calculator have ads?

No, Bio-T Testosterone calculator does not contain advertisements.