As Measured by Free Testosterone
Testosterone is primarily a male sex hormone that helps male features develop. Testosterone is predominantly made in the testes (males) and the ovaries (females).
Most testosterone attaches to 2 proteins in the blood, albumin & SHBG. However, some testosterone does not and is called free testosterone. Free testosterone is bioavailable testosterone that is not bound to a protein and can be used up by the body. Free testosterone can bind to any cell in the body and helps regulate metabolism, and execute a variety of other cellular functions in both sexes.
Men with low levels can suffer from low labido, low energy levels and infertility.
Polycystic ovary syndrome is a big problem in females with high levels of Free Testosterone, leading to infertility, lack of menstruation, blood sugar problems and more..