Ok, I know everyone saids dont freak out, but I am. My cat Cheynne had been in remission since last August 2012. He has been fine. A little stiff here and there but he is 16 years old and has hyperthyroid. I haven't tested him since June. Tested him today since he has been acting a little odd. Was 175. Will retest in a couple hours. When do I know for sure if I need to start giving him insulin again??