wie lange kein cetirizin vor allergietest — what can you do yourself?

The question of how long to stop cetirizine before an allergy test cannot be answered from the provided context, which contains no information on allergy testing or antihistamines. Based on general medical practice: for a skin prick test, a washout period of 3–7 days is typical because cetirizine suppresses histamine reactions. For a blood test (specific IgE), intake is less critical, but a short pause may still be advised. What you can do yourself: keep a symptom diary, avoid known allergens, list all medications, and ask your doctor for specific preparation instructions. The evidence here relies on clinical practice, not on studies from the given material. Without specific sources, the answer remains general; individual adjustment requires medical consultation.