Useful For: Testosterone, Total, Males (Adult), Immunoassay – Testosterone circulates almost entirely bound to transport proteins: Normally less than 1-2% is free. The principal transport protein for testosterone is known as sex hormone binding globulin (SHBG) or testosterone-estradiol binding globulin (TeBG). Testosterone measurements are used to assess erectile dysfunction, infertility, gynecomastia, and osteoporosis and to assess hormone replacement therapy.
Methodology: Immunoassay (IA)
Specimen Requirements: 1 red-top tube (minimum: 0.5 mL of serum). Centrifuge red-top 30 minutes after draw. Refrigerate specimen after collection.
Analytical Time: 1 day
Days Set Up: Monday through Friday