I was hoping maybe somebody could help me out in clarifying a couple of things. I'm not in great shape for researching myself these days. Any input would be most welcome and appreciated. In particular, I was wondering: 1) My Yasko genetic results and some symptoms seem to indicate that my BH4 may be quite low, but the pre-fab organic acids test results (see attached) seemed to be suggesting that my tyrosine might be too high based on my level of 4-hydroxyphenyllactic acid. This seems inconsistent. Any thoughts? Organic Acids Results: View attachment Sparrow Organic Acids.pdf 2) I don't have the MTHFR C677T polymorphism, which I understand to be the one that makes methylfolate critical. I do have other MTHFR polymorphisms, though (3, and A1298C). If I do not have the C677T polymorphism, do I still need to shy away from folic acid, or should they both be helpful? Genetic Results: Any additional input on the Organic Acids in particular would be greatly appreciated. I've done my homework on the Yasko side as much as I was able to. Thanks!!