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
Laboratory findings consistent with the diagnosis of prolactinoma include elevated prolactin levels and reduced thyroid hormone levels.
Laboratory Findings
Laboratory findings consistent with the diagnosis of prolactinoma include:
- Blood prolactin concentration may be higher than normal (>250 ng/ml)
- Blood levels of testosterone in men with prolactinoma may decrease
- Decreased blood concentration of thyroid hormones