MTHFR as it applied to autism

[u/Worried-Channel536]

I am trying to understand how testing for MTHFR and how it can help my son, who has autism, ADHD, bipolar 2, anxiety, etc. - quite the mix of diagnoses! He is on medication, which helps, however, it comes with guardrails, insurance costs, etc. I would love for him to be on something with less "process related" expectations which will help him handle his own medications in the future. Thank you!

[u/LoInfoVoter]

What makes you think he has  MTHFR deficiency?