Box 3.6
Testing for drug allergy
Immediate testsLater tests

Mast-cell tryptase, C3, C4, as soon after the reaction as possible and at 24 hours

Refer to immunologist/allergist for investigation

Serum albumin

Specific IgE, SPT, and intradermal testing: Flow-CAST®; drug challenge (DBPC)

Immediate testsLater tests

Mast-cell tryptase, C3, C4, as soon after the reaction as possible and at 24 hours

Refer to immunologist/allergist for investigation

Serum albumin

Specific IgE, SPT, and intradermal testing: Flow-CAST®; drug challenge (DBPC)

DBPC, double-blind placebo-controlled challenge

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