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Testosterone Free and Total
What's Included?

  • Fasting: No fasting
  • Sample Type: Blood
  • Setup Time: Daily
  • Turnaround Time: 4 to 7 days
  • More Information
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    This panel includes both Testosterone Total as well as the unbound portion called Testosterone Free in the blood.

    Includes the following tests. Click the test name for more information.

    Testosterone Total
    Testosterone Free

    This test is performed when symptoms indicate there may be abnormal androgen (male hormone) production. In males, the testes produce the majority of the circulating testosterone. The pituitary hormone LH stimulates the testicular Leydig cells to produce testosterone. In females, the ovaries produce the majority of the testosterone.

    The adrenal cortex produces another androgen, called DHEAS. In male children, testosterone levels are used to assess early or late puberty. In adult males, testosterone levels are critical in the evaluation of impotence and infertility.

    Testosterone levels are obtained in women in the work-up of excess hair growth, virilization (male body characteristics) and irregular menses.

    MyMedLab Product ID: 1529