Lisa covered your emergency question, so I'll leave that.....
can you tell us more about your kitty?
what is his/her name?
what kind of insulin is he on?
How did your vet arrive at his starting dose?
How and when was your kitty dx'd?
what kind of food is he eating? is this a new diet ?
are you testing for ketones? ( you buy the strips at a drugstore -- you test the urine for ketones )
what kind of meter are you using to test?
how old is your kitty?
how much does he weigh?
does he have a history of any other health issues?
here is link to a template to fill out a profile so all this information will be there and handy so you don't have to repeat it again and again and makes it easier for the board.
http://felinediabetes.com/FDMB/viewtopi ... =6&t=17766
as for his ears..... here is a link to a post with lots of good testing tips. I hope it helps.
http://www.felinediabetes.com/phorum5/r ... sg-1817358
I know it is very overwhelming to begin with. we've all been there.
You are off to a great start with the testing !
welcome to the board.