You can do the pee strip yourself if you like. They're available at your neighborhood pharmacy. I raised a diabetic kid. You can get specific ketostix, but sometimes it's easier to use the same 7-way test strips that the AME's typically have.
But really, if you're spilling sugar you're in deep trouble, you should be seeing your regular doctor more.
If you have to answer YES to any question on the form or you have doctors visits, then yes, you should think about a consult with a aviation medical expert prior to commencing an examination for real.