There are times when I check my
urine for ketones when my blood
glucose is particularly high. For example, this morning before I had eaten a bite, my blood sugar was 406. I checked my urine for ketones at that time and it showed moderate to high amounts of ketones in my urine. This afternoon after I ate, my blood sugar was 521 and I checked for ketones again. On the second check, it was negative to a trace. Does anyone have any ideas what could cause this to happen?