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    Did you mean Free Androgen Index?
    GlossaryFree Androgen Index

    ratio estimating active testosterone in the bloodstream

    The Free Androgen Index (FAI) is a ratio used to estimate the amount of active, or "free," testosterone in the bloodstream. It is calculated by dividing the total testosterone level by the sex hormone-binding globulin (SHBG) level and then multiplying by 100. This index is particularly useful in diagnosing conditions related to hormonal imbalances, such as polycystic ovary syndrome (PCOS) and certain types of alopecia.

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      learn Fluridil

      a topical anti-androgen with less systemic involvement

      learn Pyrilutamide

      highly targeted anti-androgen that might have minimal systemic effects

      learn Bicalutamide

      a nonsteroidal anti-androgen, most commonly used orally for women

      learn Cyproterone

      a synthetic anti-androgen and weak progestogen that inhibits DHT binding to androgen receptor
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