Renal biopsy

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Kidney anatomy

Kidney - blood and urine flow

Renal biopsy

Inform the doctor of any drug allergies you may have, which medications you are taking, if you have bleeding problems, and if you are pregnant. You must sign a consent form. You may be restricted from food or fluid before the test.

When the local anesthetic is injected, there will be a prick and a mild stinging. As the biopsy is done, there will be an aching feeling. After the test there may be muscle soreness. You may see bright, red blood in the urine the first 24 hours after the test. If the bleeding lasts longer, inform the health care provider.

The test is sometimes used to evaluate a transplanted kidney. It is also used to evaluate an unexplained drop in kidney function, persistent blood in the urine, or protein in the urine.

Review Date: 02/03/2006
Reviewed By: Charles Silberberg, DO, Private Practice specializing in Nephrology, Affiliated with New York Medical College, Division of Nephrology, Valhalla, NY. Review provided by VeriMed Healthcare Network.