Hormone Inhibin A

Results

The inhibin A test is done to measure the amount of this hormone in a pregnant woman's blood to see if there is an increased chance the baby may have Down syndrome. Inhibin A is made by the placenta during pregnancy.

A normal result means 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 other quad screen blood tests.

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

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Author:	Sandy Jocoy, RN	Last Updated: May 14, 2008
Medical Review:	Sarah Marshall, MD - Family Medicine Siobhan M. Dolan, MD, MPH - Reproductive Genetics
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