PK reactio detects -: (A) IgG, (B) IgA, (C) IgE, (D) IgM
Answer is C. The Prausnitz-Kustner test (PK test, Prausnitz-Kustner reaction) is an immunologic test formerly used by physicians to determine if a patient has an allergic reaction to a specific antigen i.e, IgE Ref: Ananthanarayan & Parkers textbook of microbiology 9th edition pg:98