reagin

reagin definition - medical

re·a·gin (rē-āˈjĭn)

noun
  1. An antibody found in the blood of individuals having a genetic predisposition to allergies such as asthma and hay fever.
  2. A substance present in the blood of individuals having a positive serological test for syphilis.

Related Forms:

  • reˌa·ginˈic (rēˌə-jĭnˈĭk) adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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