Why do I need an MTHFR mutation test?You may need this test if:You had a blood test that showed higher than normal levels of homocysteineA close relative was diagnosed with an MTHFR mutationYou and/or close family members have a history of premature heart disease or blood vessel disordersYour new baby may also get an MTHFR test as part of routine newborn screening. A newborn screening is a simple blood test that checks for a variety of serious diseases.
