Progesterone, Serum (Concentration)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test to evaluate ovarian function, diagnose conditions like polycystic ovary syndrome (PCOS), assess pregnancy-related hormone changes, or check for hormonal imbalances before fertility treatments. It can also be used during menstrual cycle tracking or to monitor conditions affecting hormone production.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for 8–12 hours before the draw if your lab uses a specific protocol. Wear a comfortable shirt for easy access to your arm. If you’re taking hormonal medications (e.g., birth control), let your provider know, as this may affect results.

What the Test Results Mean

Results are interpreted based on your medical history, symptoms, and cycle phase (if applicable). Low levels may suggest issues like ovarian dysfunction or early pregnancy, while high levels could indicate pregnancy, certain tumors, or hormonal therapy. Your provider will discuss these findings in context with your care plan.

Common Conditions Monitored

This test is often used to diagnose or monitor conditions like endometriosis, ovarian cysts, menstrual irregularities, or hormone-related fertility challenges. It may also help assess adrenal or pituitary disorders indirectly by evaluating hormone interactions.