If you had a recent
blood transfusion, you may not be able to
have the test, or the test results may not be helpful. 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.
What To Think About
A positive Tay-Sachs test may need to be
confirmed with other genetic tests. To learn more, see the topic
People who have a high
chance of being a
carrier of Tay-Sachs may want to have a blood test before they have children, to
see whether they are carriers. People of Ashkenazi Jewish, French-Canadian,
or Cajun descent, or those who have a family history of Tay-Sachs
disease or who live in a community or population with a high amount of
Tay-Sachs disease may want to be tested.
Genetic counseling is available for people who have
the disease or are carriers.