The Free Androgen Index (FAI) Test is a calculated value used to estimate the biologically active fraction of testosterone in the blood. It is an important tool for investigating androgen (male hormone) excess or deficiency in both men and women.
Since the body's major circulating proteins (like SHBG) bind to most testosterone, only the "free" or unbound fraction is biologically active. Measuring the FAI provides a reliable way to assess the level of this active hormone.
At Augmentum Diagnostics, an NABL-accredited lab in Delhi, we accurately measure the components needed to calculate the FAI, essential for diagnosing hormonal imbalances.