Test Detail
Overview
Interpreting Results

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Written by
Dr. Betina Chandolia
BDS, MDS - Oral Pathology and Microbiology
Reviewed by
Dr. Lalit Mohan Gupta
MBBS, MD - Microbiology
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Free Androgen Index

(FAI)
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You need to provide
Blood
This test is for
Male
Test Preparation
  1. No special preparation required

Overview


What is FAI?

A free androgen index is a blood test that is performed to determine the ratio of the hormone androgen within testosterone. Both males and females can undergo free androgen index test, as both the sexes have testosterone in their body. Fluctuating levels of androgen can have harmful effects for both.


Why is FAI done?

This test is required when men and women show certain symptoms. For men these symptoms may include the improper development of the sex organs, weakness, losing interest in sex and development of breasts.
In women, these symptoms can include improper menstrual cycle, prediabetes, obesity and more. This test can confirm whether these traits are caused due to hormonal imbalance.



Interpreting FAI results


Interpretations

For males, the normal testosterone level ranges from 300 to 1,000 ng/dL. Anything below 300 ng/dL is considered hypogonadism. For females, the level of testosterone in the blood can range from 20 to 70 ng/dL.



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