What is it used for?This test is used to find out if you have one of two MTHFR mutations: C677T and A1298C. It is often used after other tests show you have higher than normal homocysteine levels in the blood. Conditions such as high cholesterol, thyroid disease, and dietary deficiencies can also raise homocysteine levels. An MTHFR test will confirm whether the raised levels are caused by a genetic mutation.Even though an MTHFR mutation brings a higher risk of birth defects, the test is not usually recommended for pregnant women. Taking folic acid supplements during pregnancy can greatly reduce the risk of neural tube birth defects. So most pregnant women are encouraged to take folic acid, whether or not they have an MTHFR mutation.
