A kidney biopsy is the removal of a small piece of kidney tissue or cells. A doctor who specializes in tissue diagnosis uses a microscope to look at the tissue for abnormalities.

Kidney ureter
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A kidney biopsy is done to diagnose a disease or medical condition.

A kidney biopsy may be done if you have:

  • Blood in the urine
  • High levels of protein in the urine
  • Low kidney function
  • A growth on the kidney
  • Kidney infection
  • A cyst on the kidney

After the tissue is examined, your doctor can make a diagnosis and provide treatment.

If you had a kidney transplant, this procedure may be done to see if your new kidney is working properly.