I'd like to add that my OAT showed 3.7 for 2-hydroxybutyric acid and I believe that this is an organic acid that is elevated when there is increased production of sulfur amino acids derived from homocysteine. So its odd that my urine sulphates are low.
I have my food allergies now halfway contained with one very dose antihistamine before bedtime.
Regardless of what I ate I had a reaction, gallstone, kidney and colon, a part of MTHFR.
Also; since you have 23andme, you may like to check your RAW DATA for "TRPM5" and compare ("sulfate-evoked ionic currents") your observation with the article: https://pubmed.ncbi.nlm.nih.gov/30134818/
I´m always glad when I can say "I'm fine on this one", but it is very seldom the case.