A member asked:

How long do you have to be off zyrtec (cetirizine) in order to do allergy testing. i'm only taking 5mg ?

A doctor has provided 1 answer
Dr. Justin Greiwe answered

Specializes in Allergy and Immunology

3-5 days: We usually encourage patients to be off Zyrtec (cetirizine) 3-5 days prior to their appointment.

Answered 3/26/2015

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