Prolactinoma laboratory tests

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Faizan Sheraz, M.D. [2]

Overview

Prolactin blood levels are tested in women with unexplained milk secretion (galactorrhea) or irregular menses or infertility, and in men with impaired sexual function and, in rare cases, milk secretion.

Laboratory Findings

Prolactin blood levels are tested in women with unexplained milk secretion (galactorrhea) or irregular menses or infertility, and in men with impaired sexual function and, in rare cases, milk secretion.

• Prolactin levels in blood: The blood level of prolactin in patients with prolactinoma may be higher than normal.
• Testosterone levels in men: Blood levels of testosterone in men with prolactinoma may decrease.

If prolactin is high, thyroid function tests are done.

References

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