Meaning & use
Reagin
Last updated
an antibody, especially one associated with allergic or hypersensitivity reactions, historically detected in serological tests such as those for syphilis
See it in a sentence
The lab test measured reagin levels to screen for a possible syphilis infection.
Early immunologists used the term reagin before the specific antibody class, IgE, was identified.
A note on using this word
A specialized medical and immunological term; the widely used Rapid Plasma Reagin, or RPR, test for syphilis takes its name directly from this word.
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