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Male urinary system
Male urinary system


RBC urine test

Definition:

The RBC urine test measures the number of red blood cells in a urine sample.



Alternative Names:

Red blood cells in urine; Hematuria test; Urine - red blood cells



How the Test is Performed:

A random sample of urine is collected. Random means that the sample is collected at any time either at the lab or at home. If needed, the health care provider may ask you to collect your urine at home over 24 hours . Your provider will tell you how to do this.

A clean-catch urine sample is needed. The clean-catch method is used to prevent germs from the penis or vagina from getting into a urine sample. To collect your urine, the health care provider may give you a special clean-catch kit that contains a cleansing solution and sterile wipes. Follow instructions exactly so that the results are accurate.



How to Prepare for the Test:

No special preparation is necessary for this test.



How the Test will Feel:

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



Why the Test is Performed:

This test is done as part of a urinalysis test .



Normal Results:

A normal result is 4 RBC/HPF (red blood cells per high power field) or less when the sample is examined under a microscope.

The example above is a common measurement for a result of this test. 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 result.



What Abnormal Results Mean:

Higher than normal number of red blood cells in the urine may be due to:

  • Kidney and other urinary tract problems, such as infection, tumor , or stones
  • Kidney injury
  • Prostate problems
  • Bladder or kidney cancer


Risks:

There are no risks with this test.



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.




Review Date: 8/18/2013
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.

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Morristown Medical Center

100 Madison Avenue
Morristown, NJ 07960
973-971-5000

Overlook Medical Center

99 Beauvoir Avenue
Summit, NJ 07901
908-522-2000

Newton Medical Center

175 High Street
Newton, NJ 07860
973-383-2121

Chilton Medical Center

97 West Parkway
Pompton Plains, NJ 07444
973-831-5000

Goryeb Children's Hospital

100 Madison Avenue
Morristown, NJ 07960
973-971-5000

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