Hello, can anyone recommend a dr. who understands MTHFR? And is also aware of good testing to help figure out what's going on? I'm working with a couple of drs. who suppossedly understand it but not getting good results and having a lot of trouble with ammonia/sulfur and who knows what else. Neither are recommending the tests that Yasko mentions, so I think that would help. This is so complicated that I can't find a dr. who understands and I've been to 3 local drs. in addition to the above 2. Things don't seem to be improving. You can email me at firstname.lastname@example.org. Thanks very much.