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Pertaining to a reagin.


(re-a-jin, -gin) [Ger. Reagin, fr. reag(ieren), to react + -in]
A type of immunoglobulin E (IgE) present in the serum of atopic individuals that mediates hypersensitivity reactions. Synonym: sensitizing antibody

rapid plasma reagin

Abbreviation: RPR
A nonspecific serological test for syphilis. The RPR titer is elevated in most patients with syphilis (and falsely elevated in some patients with other diseases). The titer decreases or returns to normal after successful eradication of the disease.
reaginic (re-a-jin'ik, -gin'), adjective


pertaining to reagin.

reaginic antibody
immunoglobulin E.
References in periodicals archive ?
Acute (type 1, immediate hypersensitivity): IgE antibody measurable by RAST (serum) test or by skin prick tests reflecting the histaminic, reaginic, or Ishizaka responsiveness.
In 1967, two independent teams discovered that the reaginic antibody (regain) was IgE.