<prompt> Prausnitz-kustner reaction is aType I HypersensitivityType II HypersensitivityType III HypersensitivityType IV Hypersensitivity  <response>: Prausnitz-Kustner test was formerly used to determine if a patient has an allergic reaction to a specific antigen. A patients serum is injected in healthy person skin and antigen was injected at same site 24 hours later.If the patient was sensitive it would trigger a type I reaction. 