My 12 year old diabetic cat has been switched to Fancy Feast canned a few weeks ago. My new vet, a cat specialist had me go from the 6 units of Prozink my other vet prescribed to 2 units twice a day. Sugars have been in low to mid 200's. Vet has me back the 24th to check and adjust. I have had 377 and 325 my last tests at home. He might have eaten a couple of bites of dry on the 377, but not too much. I test once a week. I couldn't get enough blood to test today. My cat is a grazer. I leave canned food during the day when I work and feed when I am home at night.It would be better to have 3 feedings a day. I worry about him not having food while I am gone. He is hungry usually at 4:30 when I get home. I leave at 6:30. Question...if he has eaten off and on during the day and eats more at 4:30, how long should I wait to test? He gets his shots at 6:00 morning and evening. Vet is gone for a week. I can see her partner, but really trust her. Cat acts fine. Could the tests be high because he ate only 1 1/2 hours before testing? I don't want to ignore it and have kidney problems, I don't want to up insulin if I don't have to, I don't want to rush to the vets if it can wait till my vet is back. Any ideas/suggestions?