opinions/advice on Max please/vets cancelled app.

Have an appointment at the vets at 5 o clock today.

Max has a really wet botton/legs etc.
He is still using the litter tray, but does not really sit in it and I have found no evidence of him weeing anywhere else...
So, is he just leaking a bit of urine as opposed to being incontinent ?????

Previous medical history on Max...
Eye infection.... twice before
Ear infections... twice before
Stasis............. twice before
Dental..............once before

Max is a 2 and a half year old giant.

Should I ask for a blood test to see if it is EC

So any opinions/advice would be welcome

Thanks

Never known this happen before but the vets canceled our app due to an emergency.........:evil:

Just hope things are ok til tomorrow