Testosterone, Total, Males (Adult), Immunoassay
Fasting Required: No

Specimen: Blood

Results: 3-5 Business Days

Description: Testosterone is a hormone that causes male characteristics. The blood level is used by men to investigate abnormal sexual development and sexual dysfunction. Small amounts are produced in women's ovaries and levels are tested to evaluate virilization. A drop in testosterone levels can contribute to moodiness, weight gain, loss of muscle mass, and diminished libido.

This test reports up to a level of <1500(ng/dL).

Methodology: Immunoassay

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, LC/MS/MS.

Clinical Significance: 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.

Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.