Testosterone, Free+Total LC/MS is a comprehensive test that measures both free (unbound) and total testosterone levels using advanced liquid chromatography-mass spectrometry technology. This test provides a complete evaluation of androgen status by measuring the biologically active free testosterone fraction and the total testosterone pool. Free testosterone represents the portion that is immediately available to tissues and is not bound to sex hormone-binding globulin (SHBG) or albumin. This test is particularly valuable for evaluating women with hirsutism, masculinization, or polycystic ovary syndrome, as well as men with suspected hypogonadism. It's also useful in conditions where SHBG levels may be altered, such as obesity, liver disease, or thyroid disorders. The LC/MS methodology provides superior accuracy compared to immunoassays, especially for low-level measurements in women and children.