Warning Signs of Kidney and Urinary Tract Diseases

  1. High blood pressure

  2. Protein and/or blood in the urine

  3. Creatinine and BUN blood tests outside the normal range*

  4. Glomerular filtration rate (GFR) of less than 90**

  5. More frequent urination, particularly at night; difficult or painful urination

  6. Puffiness around eyes, swelling of hands and feet

* BUN and creatinine are wastes that build up in the blood when your kidney function is reduced.

** GFR (a measure of kidney function) is estimated from a blood creatinine test. In some people, a GFR of 60 to 89 may be normal.

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© 2014 National Kidney Foundation. All rights reserved. This material does not constitute medical advice. It is intended for informational purposes only. Please consult a physician for specific treatment recommendations.