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Hyperprolactinemia is a hormonal condition characterized by abnormally high levels of prolactin in the blood. It is caused by excessive production of prolactin hormone by the pituitary gland, often due to a benign tumor called a prolactinoma. The Prolactin blood test is the most important test for diagnosis as it directly measures prolactin hormone levels in the bloodstream.
Hyperprolactinemia is caused by excessive production of prolactin hormone by the pituitary gland. The most common cause is a prolactinoma, a benign tumor on the pituitary gland that secretes too much prolactin. Other causes include certain medications (particularly antipsychotics and antidepressants), hypothyroidism, kidney disease, chest wall injuries, and stress. In some cases, the cause remains unknown, which is called idiopathic hyperprolactinemia.
The Prolactin blood test is the most important test for hyperprolactinemia because it directly measures the amount of prolactin hormone circulating in your bloodstream. This test provides clear diagnostic evidence since hyperprolactinemia is defined by elevated prolactin levels above the normal range. Your doctor may order this test multiple times on different days to confirm consistently high levels, as prolactin can fluctuate due to stress, sleep, or recent physical activity. Normal prolactin levels typically range from 4-25 ng/mL for women and 4-15 ng/mL for men, with levels above these ranges indicating hyperprolactinemia.
You should get tested if you experience irregular or absent menstrual periods, unexpected milk production when not pregnant or breastfeeding, fertility problems, reduced sex drive, or erectile dysfunction in men. Women who notice breast discharge without a clear cause or men experiencing breast enlargement should also consider testing. Additionally, if you have persistent headaches or vision problems alongside these symptoms, prompt testing is important as these could indicate a larger pituitary tumor pressing on nearby structures.
What this means
Your testosterone levels are slightly below the optimal range. While this is not necessarily cause for concern, it may contribute to occasional fatigue, reduced motivation, or lower muscle mass over time.
Recommended actions
Increase resistance or strength training
Prioritize 7–8 hours of quality sleep per night, try to reduce stress
Include more zinc- and magnesium-rich foods (like shellfish, beef, pumpkin seeds, spinach)
Consider retesting in 3–6 months
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