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A member asked:

Should you induce allergic reaction for tryptase blood test? i read sample timing matters?

A doctor has provided 1 answer
Dr. John Chiu answered

Timing matters: In anaphylaxis, the tryptase level should be obtained no more than 2 hrs after the reaction occurs. However anaphylaxis to food often does not cause elevated tryptase level. Why would you want to trigger an allergic action to get a positive result since not all anaphylaxis lead to elevated tryptase level?

Answered 7/2/2016

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