/SiteAssets/Images/FMOLHSBlankBanner.png

Health Information

Urea nitrogen urine test
Bookmarks

Urea nitrogen urine test

Print-Friendly  

Urine urea nitrogen

Urine urea nitrogen is a test that measures the amount of urea in the urine. Urea nitrogen is a waste product resulting from the breakdown of protein in the body.

I Would Like to Learn About:

  • How the Test is Performed

    A 24-hour urine sample is needed. You will need to collect your urine over 24 hours. Your health care provider will tell you how to do this. Follow instructions exactly to ensure accurate results.

  • How to Prepare for the Test

    No special preparation is needed.

  • How the Test will Feel

    The test involves only normal urination. There is no discomfort.

  • Why the Test is Performed

    This test is mainly used to check a person's protein balance and the amount of food protein needed by severely ill patients. It is also used to determine how much protein a person takes in.

    Urea is excreted by the kidneys. The test measures the amount of urea the kidneys excrete. The result can show how well the kidneys are working.

  • Normal Results

    Normal values range from 12 to 20 grams per 24 hours.

    Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.

  • What Abnormal Results Mean

    Low levels usually indicate:

    • Kidney problems
    • Malnutrition (inadequate protein in diet)

    High levels usually indicate:

    • Increased protein breakdown in the body
    • Too much protein intake
  • Risks

    There are no risks with this test.

Related Information

  Protein in diet    

References

Gerber GS, Brendler CB. Evaluation of the urologic patient: history, physical examination, and urinalysis. In: Wein AJ, Kavoussi LR, Novick AC, et al., eds. Campbell-Walsh Urology. 10th ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 3.

McPherson RA, Ben-Ezra J. Basic examination of urine. In: McPherson RA, Pincus MR, eds. Henry’s Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 28.

BACK TO TOP 

Review Date: 8/25/2013  

Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

adam.com

 
A.D.A.M. content is best viewed in IE9 or above, Fire Fox and Google Chrome browser.