Metabolic Health

Free Androgen Index

A healthy result should fall into the range 0 - 6.6 u.

The free androgen index is a measure of the biologically active testosterone in the blood. It is a ratio of the total testosterone to the level of sex hormone-binding globulin (SHBG). About half of all testosterone in the blood is tightly bound to SHBG and the rest is either free or loosely bound to albumin. Only the portion that is free or bound to albumin is considered biologically active. The portion bound to SHBG is considered biologically inert. Thus, by calculating the ratio of total testosterone to SHBG, one can get a measurement of physiologically active testosterone in the blood. The free androgen index is expressed in the same units and multiplied by 100 to provide a number similar to the free testosterone concentration in blood. Normal free androgen index results are slightly higher than free testosterone levels, however. As a ratio, there are no units. The free androgen index may be a more accurate assessment of free testosterone in women than in men.

Normal Ranges for Free Androgen Index:

• Male:

− 20 to 29 years: 30.0−128.0

− 30 to 39 years: 24.0−122.0

− 40 to 49 years: 14.0−126.0

− Older than 49 years: 18.0−82.0

• Female:

− 20 to 49 years: 0.4−8.4

− Older than 49 years: 0.4−6.6

 

Sources:

https://www.labcorp.com/test-menu/25691/free-androgen-index-fai

https://www.labcorp.com/test-menu/35496/testosterone-free-direct

https://www.urmc.rochester.edu/encyclopedia/content.aspx?ContentTypeID=167&ContentID=free_androgen_index

https://www.webmd.com/men/features/low-testosterone-explained-how-do-you-know-when-levels-are-too-low#1

https://www.uptodate.com/contents/overview-of-androgen-deficiency-and-therapy-in-women

Free Androgen Index result calculator

insert the value from you Free Androgen Index test result.

Is your Free Androgen Index result too high or too low?
Upload lab report and instantly get more information about your results.

One Report Interpretation

$15 one time

Select this plan

  • One lab report interpretation
  • Use self upload form
  • 800+ biomarkers explained
  • Explanation of high, low results
  • Recommendations
  • Pay per additional interpretations

Unlimited Interpretations

$59 per year

Select this plan

  • Unlimited lab report interpretations
  • We do the uploading of 4 tests for you
  • 800+ biomarkers explained
  • Explanation of high, low results
  • Recommendations
  • Online support

Test results don't lie. Learn what is happening inside your body.

Health is not exactly rocket science. You just have to know what your body needs and doesn't need. Your medical tests contain that information. Upload them to our service and we’ll help you understand organize, and act on them.

Get Started

WE SUPPORT 1000+ BIOMARKERS INCLUDING BIOMARKERS FROM YOUR FAVOURITE LABS


"I was really concerned about my lab results and my GP was not able to see me for another week. Through HealthMatters I was able to interpret my results instantly."


"I've been keeping all my lab results in a spreadsheet, covering approximately 20 years. The HealthMatters team helped me upload that info into the cloud. I can show this data to my family and doctors now easily."


"I had no idea what my lab results meant. Here I found all the biomarkers that I was looking for online. Finally, I have not only organized them all neatly in one place, but I am also grateful to be able to understand what they mean."

Your Privacy And Security

At HealthMatters, we're committed to maintaining the security and confidentiality of your personal information. We've put security measures in place to help protect against the loss, misuse or alteration of information under our control. We use procedural, physical and electronic security methods designed to prevent people who aren't authorized from getting access to this information. Our internal code of conduct adds additional privacy protection. See our Privacy Policy for more information.