Eat your beets.
https://pubmed.ncbi.nlm.nih.gov/26653541/
i have the neo 40. there is a saliva test
https://www.amazon.com/stores/page/5DFAA627-F141-412B-B4F5-5209C2F3675E
Not sure how the gene mutations in the MTHFR genes affect this. many people have at least the two.