How do urinalysis tests diagnose UTIs and kidney diseases?

How do urinalysis tests diagnose UTIs and kidney diseases? Urinary tract infections (UTIs) can make urine appear cloudy instead of clear. High protein levels in urine can be a symptom of kidney disease.Urinalysis is one of the most comprehensive tests for diagnosing several health problems so it can be a part of a routine medical exam and pre-surgery preparation, or can be used to screen for specific disorders such as liver, kidney diseases, and diabetes.