Slow down. First, you get
one UPC test done. If it is negative for proteinuria, you’re done. Nothing further needed to be done unless her next urine test shows a high numbers, say 3+.
This post has a good flow chart (Figure 1) and also some other helpful info about diagnosing causes. Please note that
high pH and high USG can affect results (cause false positives of protein amount) and her pH and USG are very high.
Here is information regarding UPC and also a test for microalbuminaria (MA). “Usually” if MA is negative, the USG shows concentrated urine, there are no WBCs or RBCs, then proteinuria is less of a concern. Your vet can guide you on that.
If you get one UPC test done and it indicates she has proteinuria, then you should have two more done within two weeks of the first but check with your vet because approaches change. I have always heard three tests within two weeks for
diagnosis as UPC can change throughout the day. However, if after three tests, the UPC remains indicative of proteinuria, the cause would have to be determined through, for example) ultrasound (e.g. does she have a kidney infection). I am not certain of all the diagnostics done to determine the cause of proteinuria when there is no CKD present. If it’s idiopathic and medications are started, then they would test UPC again to be sure the treatment is working.
Have you ever had her blood pressure checked? That would be one cause of proteinuria that is not necessarily CKD related.
BUT….considering her high pH and high USG, I’d suggest you talk to the vet about starting with a UPC and see if it’s negative. Don’t put the cart before the horse.