Inhibin A (Serum or Plasma)

What Is Inhibin A Used For?

Inhibin A is primarily measured in blood serum or plasma to evaluate ovarian function, particularly in women undergoing fertility treatments or those with suspected ovarian disorders. It can also help track progress during fertility treatments like in vitro fertilization (IVF).

Who Might Need This Test?

A healthcare provider may recommend this test if you are undergoing fertility evaluation, experiencing irregular menstrual cycles, or have symptoms like irregular periods, pelvic pain, or concerns about ovarian reserve. Men may also have it checked if they have unexplained infertility or conditions affecting testosterone production.

How Is the Test Performed?

A blood sample is drawn from a vein, usually in your arm. The blood is then processed into either serum (liquid part after clotting) or plasma (liquid part after centrifugation) for testing. The test uses an immunoassay method to detect inhibin A levels.

What Are Possible Results?

Results are typically reported in international units per liter (IU/L) or similar units. While reference ranges can vary by lab, higher levels may indicate normal ovarian function, while lower levels could suggest reduced ovarian reserve or other conditions.