Serum Prolactin Level (Mass Fraction)

Why Might You Need This Test?

Your healthcare provider may order a prolactin test if you have symptoms like irregular menstrual periods, infertility, breast changes, headaches, or signs of a pituitary tumor. It can also help diagnose conditions like hyperprolactinemia or evaluate certain medications that may affect hormone levels.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to avoid certain medications or activities that could influence results, such as smoking or certain supplements. You’ll typically have blood drawn from a vein in your arm.

What the Results Mean

Results help determine if your prolactin levels are within the expected range or if they’re elevated or low, which could signal underlying health concerns. Your doctor will discuss these findings in the context of your symptoms and medical history.

Common Reasons for Testing

This test is often used to diagnose conditions like pituitary tumors, hyperprolactinemia (high prolactin levels), or to check for hormonal imbalances that may affect fertility, menstrual cycles, or other bodily functions.