hepatitis B surface antigen

noun

Medical Definition of hepatitis B surface antigen

: an antigen that is usually a surface particle from the hepatitis B virus and that is found circulating in the blood serum especially of infected individuals abbreviation HBsAg

called also Australia antigen

Learn More About hepatitis B surface antigen

Dictionary Entries Near hepatitis B surface antigen

hepatitis B

hepatitis B surface antigen

hepatitis C

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Cite this Entry

“Hepatitis B surface antigen.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hepatitis%20B%20surface%20antigen. Accessed 4 Oct. 2022.

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