From my understanding, being heterozygous for the MTHFR gene is NOT actually a problem. Unless my brain is seriously screwy, heterozygous means you only have one of the genes and MTHFR can only be an issue when you have two (homozygous). Did they also check homocysteine levels? Elevated homocysteine levels are what indicates that the MTHFR gene is a problem and needs to be treated.

I'm heterozygous for MTHFR and I've been told quite emphatically that it's not a cause for concern and doesn't need to be treated. I hope you can get a clear answer from your FS soon - leaving results that long is just... mind boggling!

BW