Cold Agglutinins: Why It Is Done


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Why It Is Done


The cold agglutinins test may be done to:

  • See whether high cold agglutinin levels are causing autoimmune hemolytic anemia.
  • Find pneumonia caused by mycoplasma. Over half of people with pneumonia caused by mycoplasma develop an increase in cold agglutinin levels in their blood within a week of being infected. Newer tests for mycoplasma pneumonia have replaced the cold agglutinins blood test.


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Last updated: June 12, 2008
Author: Maria G. Essig, MS, ELS
Reviewed By: Anne C. Poinier, MD - Internal Medicine, W. David Colby IV, MSc, MD, FRCPC - Infectious Disease
Editors: Susan Van Houten, RN, BSN, MBA, Tracy Landauer

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