Cat with blood in urine
I was cleaning out my cat's litter tray and when I lifted the liner there was a watery droplet of blood on the plastic. Somehow the urine had got through the liner into the tray as well, and it looked darker than usual so I dabbed it with a paper towel and it had a red tinge to it so I'm pretty certain my cat has a bit of blood in her urine but it's not really obvious or clots or anything.
She is very old (approx 17 yrs old) and I guess I'm expecting the worse that it might be cancer? I don't think she is blocked up by looking at the amount of urine in her tray (she pees big puddles). she is also on Carbimazole for hyperthyroid and we recently upped her dose a bit but when she was diagnosed with hypert her kidneys results came back fine.
I guess I'm wondering what tests need to be done to explain the blood and find the cause?