High Free Androgen Index (FAI) means there is a higher ratio of free testosterone relative to sex hormone-binding globulin (SHBG) in the blood, suggesting increased bioavailable testosterone.
High FAI can be associated with a range of symptoms and conditions. In men, it may be linked to acne, increased body hair, aggressive behavior, and an increased risk of prostate problems. In women, high FAI is often seen in conditions such as polycystic ovary syndrome (PCOS), and may be linked to irregular menstrual cycles, excess facial and body hair, and acne.
Causes of a high FAI can vary and may include hormonal imbalances, use of certain medications, or underlying health conditions. This result is commonly reviewed further to clarify the underlying cause and guide treatment options, which may include lifestyle changes, medication to balance hormone levels, or addressing underlying health issues.
Test results are commonly shared with the GP or the medical practitioner who requested the test.