Quick Navigation

Free Testosterone

Free testosterone is a measurement of testosterone that is not bound to SHBG, and is thought to be more reflective of the effects of testosterone than a basic blood measurement of testosterone.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

Get the latest information on 400+ supplements and their effects on 600+ health conditions & outcomes.

By becoming an Examine Plus member, you'll have access to all of the latest nutrition research. Quickly and easily look up scientific research on over 400 supplements across over 600 different health goals, outcomes, conditions, and more.

Human Effect Matrix

Unlocked for Examine Plus members

The Human Effect Matrix looks at human studies to tell you what supplements affect Free Testosterone.

Full details on all Free Testosterone supplements are available to Examine Plus members.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c Minor Very High See 2 studies
Increases in free testosterone have been noted to coincide with testosterone increases (which are unreliable)
grade-c Minor Very High See 2 studies
Free testosterone follows the same trends as testosterone, and may be increased following supplementation in persons who are deficient in zinc
grade-c - Very High See 2 studies
No significant influence of chromium supplementation on free testosterone concentrations in women with PCOS.

Become an Examine Plus member to view this information.

You can currently view 3 supplements as a non-member — becoming a member will give you access to 10 total supplements related to Free Testosterone.

Already a member? Login now to access.

grade-c  
grade-c  
grade-c  
grade-d  
grade-d  
grade-d  
grade-d  

Become an Examine Plus member to access the latest nutrition research on over 400 supplements across over 600 different health goals, outcomes, conditions, and more.

Becoming an Examine Plus member not only unlocks the Human Effect Matrix for supplements, but also all health topics on Examine.com. We neatly summarize all the latest research so you can make the best decisions for your health based on what's accurate and not out-dated information.