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CF testing and ATB

Question
Hello, I want to ask if taking ATB may influence the result of a sweat test. My son was tested due to repeated coughing. The result was 13. When he was tested he was treated by antibiotics (clarithromycin) what I have forgotten to mention. He was without fever. Thank You.
Answer
Hello, medication, like clarithtomycin, which belongs to so called macrolide antibiotics, do not influnce the result of the sweat test.
all best, ...
Dr. J. Brázová
22.11.2011