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NetWellness provides the highest quality health information and education services created and evaluated by faculty of our partner universities.
Thursday, August 21, 2008
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NetWellness provides the highest quality health information and education services created and evaluated by faculty of our partner universities.
Thursday, August 21, 2008
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Bence-Jones protein - quantitativeDefinitionA quantitative Bence-Jones protein test measures the specific level of abnormal proteins (Bence-Jones proteins) in your urine. Alternative NamesImmunoglobulin light chains - urine; Urine Bence-Jones proteinWhy the Test is PerformedBence-Jones proteins are relatively small and are filtered out by the kidneys. This test is done to help diagnose medical conditions that lead to protein in the urine (proteinuria). Your doctor may also order this test when urine protein is high and you have other signs that suggest multiple myeloma. How the Test is PerformedCollect a "clean-catch" (midstream) urine sample. To obtain a clean-catch sample, men or boys should wipe clean the head of the penis. Women or girls should wash the area between the labia (lips of the vagina) with soapy water and rinse well. As you start to urinate, allow a small amount to fall into the toilet bowl. This clears the urethra -- the tube that carries urine from the bladder and opens to the outside. Then, in a clean container, catch about 1 to 2 ounces of urine, and remove the container from the urine stream. Give the container to the health care provider or assistant. For an infant: Thoroughly wash the area around the opening of the urethra. Open a urine collection bag (a plastic bag with an adhesive paper on one end), and place it on your infant. For males, the entire penis can be placed in the bag and the adhesive attached to the skin. For females, the bag is placed over the labia. Place a diaper over the infant (bag and all). Check your baby frequently and remove the bag after the infant has urinated into it. For active infants, this procedure may take a couple of attempts -- lively infants can displace the bag, causing an inability to obtain the specimen. The urine is drained into a container for transport back to the health care provider How the Test Will FeelThe test involves only normal urination, and there is no discomfort. ConsiderationsUrine immunofixation is the best test for detecting Bence-Jones proteins. Normal ResultsNo presence of Bence-Jones proteins is normal. What Abnormal Results MeanBence-Jones proteins are rarely found in urine, but if they are, they are usually associated with multiple myeloma. Less commonly they are present in Waldenstrom's macroglobulinemia, chronic lymphocytic leukemia, or amyloidosis.
Review Date: 3/8/2007 Reviewed By: Mark Levin, MD, Hematologist and Oncologist, Newark, NJ. Review provided by VeriMed Healthcare Network. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician 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. Copyright A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.  |
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