Tay-Sachs Test

Serum Hexosaminidase A and B

What Affects the Test

Reasons you may not be able to have the test or why the results may not be helpful include:

• Using birth control pills, which may lower your hexosaminidase A level.
• Pregnancy. Being pregnant can also lower your hexosaminidase A level.
• Having a recent blood transfusion. If you have a blood transfusion from a blood donor who has normal levels of hexosaminidase A, your level may temporarily be higher than usual.

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Author:	Carrie Henley Jan Nissl, RN, BS	Last Updated: June 20, 2006
Medical Review:	Adam Husney, MD - Family Medicine Michael J. Sexton, MD - Pediatrics Renee H. Martin, PhD - Medical Genetics
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