I thought about this some more. This is what I suggest - get the urine sulfate test strips. If your urine sulfate is high, then do the CBS protocol to lower sulfur and ammonia. Then do Rich's simplified protocol. This is the simplest, cheapest way I can think of doing it. Standard lab testing - forget folic acid and B12 tests, they're useless. Vitamin D is good. Thyroid followup test. HDRI methylation panel if you can work it out.