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A member asked:
Female 38 rast blood test result level 3 high- ige:17 iu/ml (3.5 -17.5iu/ml)a delayed rash 2 days after finished course flucloxicillin.allergy consultant"no need for drug challenge"but concerned may be a false positive, had penicillin in past,advice?
A doctor has provided 1 answer
The CAP or RAST test is elevated and given the rash after exposure to the antibiotic, consider avoidance if possible. The rash also may have been a viral rash. Watch for signs of shortness of breath, wheezing and swelling. Repeat testing in a few months is recommended.
Answered 3/4/2022
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