Nitrogen test

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Nitrogen test

Urea nitrogen urine test is performed to check for the amount of urea in urine. Urine is collected over a 24 hour period and is sent to the laboratory for testing. This test is mainly used to assess the amount of dietary protein needed by severely ill patients.

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Review Date: 8/29/2015

Reviewed By: Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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Nitrogen test