antigen test

Infection screening tool

An antigen test detects specific proteins from a pathogen—most commonly a virus—to determine if someone is currently infected.

Unlike PCR tests, which amplify genetic material, antigen tests look for viral proteins directly, yielding faster results but with somewhat lower sensitivity.

She took a rapid antigen test before visiting her grandmother.

The term became widely familiar during the COVID-19 pandemic.

Related

negative · nasal · result · diagnostic · screening · lateral flow · PCR · antibody · saliva · detection · kit · line · specimen · viral · infection · strip · sample · sensitivity

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Opposites
testing methodology

antigen testPCR test

DNA amplification diagnostic method

genetic sequencing

detection timing

antigen testserology

Study of blood antibodies

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