> Did you get any lab tests done before and after starting the diet? If you did, how did the results compare?

Only my normal annual blood test. Cholesterol was down after the diet, everything else was pretty much unchanged. We never caught the stone for analysis, but the diet was pinned as the most likely cause. To be fair, I don't have enough data to say it was the diet for certain, only correlations that people who go on Keto have a higher incidence of stones than those who don't.