Under about 250 is under renal threshold (it will vary from cat to cat and depending on where you read) so at least his kidney's are getting a break too
Come on Charlie....you can do it....Into the blues for you!
not sure what has happen in the last hour but i feed him his last pm meal @ + 4.5 and bg was +4 222, now at + 5 its 360 could this be a bounce kicking in this fast?