In renal biopsy, a small sample of kidney tissue is removed with a needle. The test is sometimes used to evaluate a transplanted kidney. It is also used to evaluate an unexplained decrease in kidney function, persistent blood in the urine, or protein in the urine.
Last reviewed 10/10/2011 by Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Scott Miller, MD, Urologist in private practice in Atlanta, Georgia. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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