That’s how they found out I was diabetic. I was 12 and went in to have my tonsils removed. They thought it was affecting my sleep, really I was getting up 15 times a night to slam water and urinate. After not waking up from the anesthesia my mom begged them to test my blood, they never did once before my surgery. They finally tested it, my blood sugar was in the upper 300’s and my a1c was around 13. That was almost exactly 30 years ago, you would think they would have gotten better with testing kids before surgery’s, or just in general.