Here is a link to information your doctor will need when testing for MTHFR. Many doctors will tell you that they cannot find the code for insurance billing purposes therefore they cannot test you. Well here you go. Print this information out to your doctor they next time they say that they cannot find it. And any doctor knows they can go to this list on Pub Med on top of many other resources. Please add to the list under comments.

FMFR # 91457