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    Latex agglutination test

    The latex agglutination test is a laboratory method to check for certain antibodies or antigens in a variety of bodily fluids including saliva, urine, cerebrospinal fluid, or blood.

    The test depends on what type of sample is needed.

    • For a urine sample, see urine collection -- clean catch or urine collection (infants).
    • For a blood sample, see venipuncture.
    • For a cerebrospinal fluid sample, see CSF collection.

    The sample is sent to a lab, where it is mixed with latex beads coated with a specific antibody or antigen. If the suspected substance is present, the latex beads will clump together (agglutinate).

    Latex agglutination results take about 15 minutes to an hour.

    Your health care provider may tell you to limit certain foods or medications shortly before the test to ensure accurate test results.

    This test is a quick way to determine the absence or presence of an antigen or antibody. Your health care provider will base any treatment decisions, at least in part, on the results of this test.

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

    If there is an antigen-antibody match, agglutination will occur.

    References

    Ashihara Y, Kasahara Y, Nakamura RM. Immunoassays and immunochemistry. In: McPherson RA, Pincus MR, eds.Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 44.

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              Tests for Latex agglutination test

              Review Date: 8/19/2013

              Reviewed By: Linda J. Vorvick, MD, Medical Director and Director of Didactic Curriculum, MEDEX Northwest Division of Physician Assistant Studies, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington. 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. 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.
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