Total & Free Testosterone

This test measures testosterone levels in saliva, a non-invasive alternative to blood testing. Testosterone is the primary male sex hormone and is also produced in smaller amounts in women. It regulates muscle mass, bone density, energy, mood, and sexual function. Abnormally high or low testosterone can indicate hormone imbalances affecting metabolism, mood, and physical performance. Salivary testosterone reflects the bioavailable hormone level and may be useful for tracking changes over time.

Free testosterone is the biologically active form of testosterone that is not bound to carrier proteins in the blood. While total testosterone measures all forms, free testosterone better reflects the hormone available for body tissues. This test helps evaluate hormonal function in both men and women. Low free testosterone in men may cause fatigue, reduced libido, or muscle loss, while elevated levels in women may indicate polycystic ovary syndrome (PCOS) or other hormonal disorders. This test provides detailed hormonal assessment.