What does the Prolactin (PRL) - PRL blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:
Prolactin is a hormone primarily associated with milk production in women after childbirth. In men, its role is less clear but it's involved in reproductive and sexual function. This test measures the level of prolactin in the blood. It's often used to diagnose conditions like prolactinoma (a benign tumor in the pituitary gland), infertility, erectile dysfunction, or to investigate symptoms like irregular menstrual cycles, unexpected milk production, or vision problems. Prolactin levels can be affected by stress, certain medications, and other health conditions, so results should be interpreted in context with other symptoms and tests.
Low prolactin levels in men are relatively rare and often don’t cause noticeable symptoms. However, they may indicate:
Low prolactin might contribute to reduced sperm production and lower sex drive. It’s important to consult with an endocrinologist for proper diagnosis and treatment if prolactin levels are consistently low.
Elevated prolactin levels in men (hyperprolactinemia) can indicate:
Symptoms may include decreased libido, erectile dysfunction, infertility, gynecomastia (enlarged breast tissue), and rarely, unexpected milk production. High prolactin can suppress testosterone production. Further tests and imaging may be needed to determine the underlying cause and appropriate treatment.