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Login or RegisterTestosterone 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.
Fasting Required: NO
Preferred Specimen: Serum
Limitations: Immunoassay does not provide sufficient sensitivity in detecting low concentrations among non-adults and women.
Reference Range(s): Adult Male 250-827 ng/dL All test requests for Testosterone on female and pediatric (<18 years) patients must use test code 15983 – Testosterone, Total.
Turnaround Time: 3 Days
Test Code: 873
