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    RBC urine test

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

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

    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.

    No special preparation is necessary for this test.

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

    This test is done as part of a urinalysis test.

    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 aboveis acommon 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.

    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.

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            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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            St. Luke's Hospital - 232 South Woods Mill Road - Chesterfield, MO 63017 Main Number: 314-434-1500 Emergency Dept: 314-205-6990 Patient Billing: 888-924-9200
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