A 37-year-old female asked:
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allergy dr ordered allergy bloodtests, i take zyrtec, allegra, (fexofenadine) singular for chronic urticaria each day. he said these will not affect the tests, true?

1 doctor answer
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience Allergy and Immunology
True: Blood tests won't be affected with the drugs you are on, only skin allergy tests would be, goodluck
Answered on May 13, 2020

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Related questions:

A 23-year-old male asked:
Dr. Nayla Mumneh
28 years experience Allergy and Immunology
Yes: Space them out. Take Allegra (fexofenadine) in the morning and take zyrtec and montelukast before bedtime.
4
4 thanks
A 22-year-old male asked:
Dr. Kristin Sokol
11 years experience Allergy and Immunology
Yes: Yes, these doses of antihistamines are safe. But make sure you stay hydrated (drink lots of water throughout the day while on this dose).
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1 thank
A 37-year-old female asked:
Dr. John Chiu
Dr. John Chiu answered
56 years experience Allergy and Immunology
It shouldn't: Zyrtec and Allegra (fexofenadine) work in similar fashion and actually the result should be additive. I suspect that you added Allegra (fexofenadine) ... Read More
A 27-year-old female asked:
Dr. Al Hegab
Dr. Al Hegab answered
39 years experience Allergy and Immunology
Reschedule: Your appointment for skin allergy testing if you have to take the antihistamine, otherwise bear with the symptoms till done with the test. I'm not su ... Read More
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1 thank

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