@rabbitmommy How very frustrating! I can relate. In the past I had kidney stones. Apparently one lodged in my left kidney just above the ureter. The symptoms resolved and I thought I had passed the stone. I couldn't afford a follow-up scan at the time so nobody knew it was still there. Eventually that left kidney completely atrophied. We didn't discover THAT until my GFR dropped after a bout of flu so I have only one functioning kidney. I went on a renal diet and switched from a plant-based diet to primarily vegetarian and, recently, to vegan and my GFR has gone from 28 to 37 in less than a year. Then, like you, I learned that much on a renal diet, especially a vegan one, has oxalates. I am NOT suggesting you do what I did. I threw up my hands and decided to stay on my current diet since right now it's working. I know I'm risking stone formation and I'm not happy about that but don't know what else to do.

I do know that most kidney stones are formed from calcium and oddly enough, CKD reduces the amount of calcium (and reduces the amount of urine,) hence reducing the likelihood of stone formation. This was one of the reasons I chose not to limit foods with oxalates. Personal choice, that. I'm not advocating for anyone else to do so.

It may sound counterintuitive but reducing dietary calcium isn't the answer. Pairing calcium-containing foods with oxalates in foods actually can help and so can reducing sodium. So can adequate hydration for those not on fluid restriction.

I've done a lot of research on pphosphorus, potassium, sodium, and protein content of various foods but have avoided trying to find out if what I now eat is high-oxalate. I guess I don't want to know. Recently someone in one of these groups posted a list of oxalate content in food, perhaps @CollenYoung or @rosemarya can find that list because I would like to have it also.