Testosterone Total Serum Blood Testing

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.

This is a Male Only Testosterone test, it cannot be performed on a female. FEMALES needing to order this test from Quest will need to order the 'Testosterone Total LC/MS/MS'.

Use of synthetic steroids, various supplements and/or high doses of biotin may interfere with the accuracy of the standard immunoassay Testosterone Total serum test. If you are taking any of these it is recommended that you order the Testosterone Total LC/MS/MS for testing.

This testosterone test will also provide results when the total testosterone value is >1500 but <3,000. This is a Male Only test, it cannot be ordered by females. If a female orders this panel, the testosterone test will not be included on the requisition or performed at the lab.

Significant deviations from the normal range may require further evaluation by your physician.

Testosterone testing is used to evaluate androgen excess or deficiency related to gonadal function, adrenal function, or tumor activity. Testosterone levels may be helpful in men for the diagnosis of hypogonadism, hypopituitarism, Klinefelter syndrome, and impotence (low values). Testosterone levels may be requested in women to investigate the cause of hirsutism, anovulation, amenorrhea, virilization, masculinizing tumors of the ovary, tumors of the adrenal cortices, and congenital adrenal hyperplasia (high values). Testosterone levels in children may be helpful to investigate issues related to puberty and development as well as the aforementioned.

Actual Total Testosterone levels will be provided with this test for levels up to 10,000.

Significant deviations from the normal range may require further evaluation by your physician.

Testosterone testing is used to evaluate androgen excess or deficiency related to gonadal function, adrenal function, or tumor activity. Testosterone levels may be helpful in men for the diagnosis of hypogonadism, hypopituitarism, Klinefelter syndrome, and impotence (low values). Testosterone levels may be requested in women to investigate the cause of hirsutism, anovulation, amenorrhea, virilization, masculinizing tumors of the ovary, tumors of the adrenal cortices, and congenital adrenal hyperplasia (high values). Testosterone levels in children may be helpful to investigate issues related to puberty and development as well as the aforementioned.

For testosterone measurements in females or expected levels >1500, use of Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS, which employs liquid chromatography/tandem mass spectrometry (LC/MS-MS), is recommended.

Use of synthetic steroids, various supplements and/or high doses of biotin may interfere with the accuracy of the standard immunoassay Testosterone Total serum test. If you are taking any of these it is recommended that you order the Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS for testing.

Significant deviations from the normal range may require further evaluation by your physician.

This assay provides the sensitivity and specificity required for the assessment of the low testosterone levels found in women, children, adolescents, and hypogonadal men.

A significant deviation from the normal range may require further evaluation by your physician.