Hormone Inhibin A Test

Why It Is Done

A test for inhibin A is done in addition to other tests to see if there is a chance of genetic conditions, such as Down syndrome.

How To Prepare

In general, there's nothing you have to do before this test, unless your doctor or midwife tells you to.

How It Is Done

A health professional uses a needle to take a blood sample, usually from the arm.

How It Feels

When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch.

Risks

There is very little chance of having a problem from this test. When a blood sample is taken, a small bruise may form at the site.

Results

A normal result means that the level of the hormone inhibin A is low, or negative. An abnormal result means the level of the hormone inhibin A is high, or positive. The level of the hormone must be reviewed with the quad screen blood tests.

All abnormal results will need to be discussed with your doctor or midwife.