Sparky has hyperT and diabetes insipidus (DI). He is on oral medication (neomercazole) for his hyperT and b.i.d. injections of DDAVP (desmopressin) for the DI. On April 23, 2006 he was due for blood and urine tests re his hyperT and DI. Because I have one cat with diabetes mellitus, I automatically check urine for glucose and ketones. On this occasion, I checked Sparky's for no other reason other than I can... It was ++++glucose. I immediately tested his blood and it was 27.8 mmol/L (500 mg/dL). I was shocked that I had yet another sugarcat. His first curve was done May 1,2006: Hr 2 15.0 Hr 4 6.6