Question about my cat

My 17 year old cat has been urinating very frequently.

We did 3 blood tests and 2 urine tests.

In the 1st blood test on 20oct, her urea is 14.8mmol/L and her crea is 247micromol/L. She was hospitalised for 3 days and given the IV drip. The blood levels went back to normal. In the blood test on 7nov, her urea is 13.0mmol/L and crea is 224micromol/L.

On 7nov, she also did a urine microscopy. Results are as follows:
Pro: trace
RBC: 5-10
Ph: 5
WBC: 75
USG: 1.015
white blood cell > 20/oif
Red blood cell > 10/oif
Suspicions of bacteria in cells

Now, my qn is whether my cat is suffering from UTI or does she have kidney failure? Its the 1st time i am seeing this vet, and she is very inexperienced. I need very urgent advice. My cat is still urinating very frequently. Please help!

Im not experienced with CKD, but I know a lot of people love this site for explaining stages of CKD and how to recognize it.

http://www.felinecrf.org

A urine microscopy isn't going to tell you whether or not your cat is in kidney failure as far as I know.  We have a kidney cat, and always go by the blood results.  Once in awhile we look at the Urine Specific Gravity, but only rarely.

AND, every lab is different, so providing the value doesn't  mean much if we don't know whether or not they are high or low based on that lab.  Even though your Vet is fairly new to the field, she should be able to tell you whether or not your furbaby has a UTI, really even by the symptoms presented.  We just had our cat in on Friday for a possible UTI, and she didn't have enough urine in her bladder for them to extract any to test, so they treated her for one based on her symptoms...sitting in the box "forever" with very little output, trying to go on the bed, on the couch, etc.  Classic signs of either a partial blockage or UTI.  And our cat IS already known to have kidney disease.

Now you said your little one is peeing a lot.  Is that the only issue?  Kidney cats drink TONS of water.  What goes in must come out.     So if this is all that is happening, there may not be a UTI present.  But you said there is "suspicion of bacteria".  Why?  I would think if that was the case, a round of antibiotics would be in order, just in case, because UTI's are more common in cats with kidney issues, and obviously your cat HAS them since she was actually hospitalized for them. 

I would say your cat probably does have kidney disease, and the above website is invaluable to cat parents in this case.  Here is a page within that site that talks about diagnosis and lab values, etc. that might help you:  http://www.felinecrf.org/diagnosis.htm   I have had three cats with kidney disease, and it is not an immediate death sentence .  Many cats have lived many years with it...it just depends on how far it has progressed, the cat, and how aggressive you want to be in "treating it" (giving sub-q fluids at home, feeding a special diet, giving antacids, etc.)  There are several cats here on TCS with it, including one of mine, so there are many people here who should be able to answer questions about it when you have them (other than to actually diagnose it ).

Has the cat been tested for diabetes? Frequent urination is one common symptom. Increased appetite and weight loss are two other commom symptoms. Do the urine clumps smell sugary and/or is very sticky and hard to scoop? You can ask the vet to do a fructosamine test on a blood sample to check the blood glucose levels.

You should also find a more experienced vet., I wouldn't want an inexperienced doctor for myself.  Same goes for my fur babies.