**Note: All laboratory testing requires an authorizing physician. DHA Laboratory offers a Patient Direct Program that partners you with an authorizing physician. If you have any additional questions regarding the availability of testing, please contact our laboratory by telephone or email.**
Free and Total Testosterone can be used in the evaluation of testicular function where the testosterone binding proteins may have been altered during treatment. Testosterone is the main sex hormone in males and is responsible for masculine features or characteristics.
Patient Preparation: Discontinue any supplements containing Biotin for 72 hours prior to specimen collection.