Epicutaneous tests benzylpenicillin

Table 3. Results of epicutaneous tests with benzylpenicillin in patients with history of penicillin allergy...

Frequent absence of specific IgE or other BPO-specific antibodies (IgM, IgG), negative immediate skin tests but positive epicutaneous test to benzylpenicillin and lymphocyte culture (these tests may also be positive by clinical manifestations of the immediate type, such as urticaria and anaphylactic shock). 

Clinical form of reaction Immediate-type (20-30 min) skin tests with benzylpenicillin and/or PPL Epicutaneous test with benzylpenicillin 200000 U/ml (24-48 h reaction) Pos. Neg. ... 

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