A prolactin blood test is used by doctors to evaluate sexual dysfunction or very low testosterone blood levels of unknown causes in both men and women.
Prolactin is secreted by the pituitary gland. There are two major functions of prolactin: to induce milk production and to develop nerve cells. Higher levels of prolactin have been associated with tumors involving the lungs, the pituitary gland, and the kidneys. Prolactin is sometimes used by doctors to evaluate sexual dysfunction of unknown cause in both men and women.
Drugs, supplements and certain diseases like pituitary adenomas may disrupt normal prolactin blood levels. These include hypothyroidism, antiepileptics, antidepressants, estrogen, opiates, diuretics, certain growth hormone releasing peptides and arginine.
NOTE: If you are taking biotin, please stop it 72 hours before the blood draw since it may interfere with hormone blood tests.
For more information on prolactin and its functions: PROLACTIN: SHOULD MEN WITH ERECTILE DYSFUNCTION BE TESTED?
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