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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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      community Just got some test results back.

      in Finasteride/Dutasteride  6 upvotes 4 years ago
      The user received hormone test results showing normal estradiol and testosterone levels, low SHBG, and normal free androgen index. They are considering starting finasteride but are concerned due to being slightly overweight.

      community Help interpreting pre-fin bloodwork

      in Finasteride/Dutasteride  12 upvotes 3 years ago
      A 20-year-old male is unsure how to interpret his bloodwork results and whether he should take finasteride for hair loss. His bloodwork shows borderline high levels of albumin and testosterone, and high progesterone, but normal levels of other hormones.

      community Day 0 - 33 - 31M min 5%, Dut 0.5mg/daily, + more

      in Progress Pictures  3 upvotes 3 months ago
      A 31-year-old male is using a hair loss treatment routine that includes daily 0.5mg dutasteride, 5% minoxidil, microneedling, biotin, vitamin D, omega-3 supplements, and alternating shampoos to restore hair density. He reports no side effects or noticeable regrowth yet but feels optimistic about the process.