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FREE ANDROGEN INDEX (FAIN)

The test is used to assess the level of active testosterone in the body. It calculates the ratio of total Testosterone to Sex Hormone Binding Globulin (SHBG), a protein that binds to hormones, and expresses it as a percentage. It is commonly used to evaluate hormonal imbalances, diagnose conditions like polycystic ovary syndrome (PCOS) in women and assess androgen levels in both men and women for various medical conditions.

This page is informational and does not provide medical diagnosis or treatment advice. For medical concerns, please consult a qualified healthcare professional.