Tests and diagnosis

By Mayo Clinic Staff

In addition to taking a thorough medical history and performing a physical exam, your doctor will recommend certain diagnostic tests, including:

  • Urinalysis. A thorough urine analysis is the most important first step. Urine tests are used to look for the presence of red blood cells, high levels of protein — which may indicate a kidney problem — and excreted minerals that can cause kidney stones. A sample of your urine is also likely to be checked for bacteria that cause infection.
  • Blood tests. These may be used to measure levels of creatinine and blood urea nitrogen (BUN) — waste products that build up in your bloodstream when your kidneys are damaged and not filtering properly. Blood tests may also look for elevated levels of liver enzymes, and for conditions such as diabetes.
Sep. 30, 2011