I got my OAT (Organic Acids Test) results that showed extremely high oxalates. I found this article which quotes Dr. Amy Yasko on why high oxalates can have many causes and it doesn't necessarily mean you need to go on a low oxalate diet. "Low B12 is a common cause of high oxalate. Low B12 induces the Krebs cycle to run in a retrograde direction, which increases oxalate. Check your B12 levels on the appropriate tests. Among other functions, lithium transports B12 into your cells. High or very high serum B12 is an indicator for low serum lithium, which can easily be checked by blood test, or hair elements analysis and urine toxic metals and essential elements." The article has lots of great insights for anyone who is tests high in oxalic acid.