Health encyclopaedia - Alphabetical Topic List

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Diagnosis of Kidney failure

After checking for symptoms, a number of tests can help diagnose kidney failure:

  • Blood test - to find out if waste substances have been filtered out
  • Urine test – to see if there is blood or protein in the urine.
  • Kidney scans such as MRI scan, CT scan or ultrasound – to find if there are any unusual blockages in urine flow. When kidney disease is advanced, the kidneys are shrunken, have an uneven shape and are firm to touch.
  • Kidney biopsy – taking a small sample of tissue to test the cells and look for damage
  • Calculating the glomerular filtration rate – to check how efficiently the kidneys are filtering waste, in particular a substance called creatinine.