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Testosterone Total Blood Test, Male Only

The Testosterone Total Blood Test, Male Only measures Testosterone levels in the blood

Sample Report

Test Code: 873

CPT Code: 84403

Also Known As:


Immunoassay (IA)


No special preparation required.

Test Results:

1-3 days. May take longer based on weather, holiday or lab delays.


Testosterone is the most abundant androgen. It is secreted by the testicular Leydig cells. In addition to its hormonal activity, testosterone is a prohormone that can be converted to dihydrotestosterone, a powerful androgen, and estradiol, an estrogen.

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.


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