COVID-19 (Coronavirus) Information

Your health and safety are our top priorities. Learn more about our COVID-19 evaluation and testing and our commitment to providing great care while maintaining the safest environment possible.

Health Library

Antigen
     
Print-Friendly
Bookmarks

Antigen

 

An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off.

An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen. An antigen may also form inside the body.

 

References

Craft J. The adaptive immune system. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 40.

BACK TO TOPText only

 
  • Antigens

    Antigens

    illustration

    • Antigens

      Antigens

      illustration

    A Closer Look

     

      Self Care

       

        Tests for Antigen

         
         

        Review Date: 7/11/2019

        Reviewed By: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, 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., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
        adam.com