Urinalysis requires taking a urine sample and using a test strip to
determine the amount of glucose in the urine. Ultimately, this is easier
and less painful than blood testing for all involved. However, it is
almost impossible to get a cat to urinate on a test strip for you. The
next best thing is to collect a sample as soon as possible after they
urinate. This has its own problems as most cats use litter boxes and
the litter absorbs the urine as soon as it is used.
The easy solution to this problem is to design a litter box that allows
the urine to be collected, but still gives the cat something to dig
in.