wie lange vor allergietest keine antihistaminika — what symptoms are typical?

The question addresses two points: the recommended washout period for antihistamines before an allergy test and typical allergy symptoms. For skin prick testing, medical consensus advises stopping short-acting antihistamines (e.g., cetirizine, loratadine) at least 3–5 days and long-acting ones (e.g., desloratadine, fexofenadine) 7–10 days prior, as they suppress the skin's histamine response and can cause false negatives. For a blood test measuring specific IgE (such as MyBody-X's test), antihistamines do not directly interfere with antibody measurement, but they may mask symptoms, complicating clinical interpretation. The manufacturer's product description does not specify a washout period – a lack of product-specific evidence. Typical allergy symptoms include sneezing, itching (nose, eyes, skin), runny or stuffy nose, watery eyes, hives, and in severe cases, wheezing or anaphylaxis. Evidence for washout is human-strong (guidelines); for the product it is marketing/unclear. Safety note: do not discontinue antihistamines without medical advice if you have severe allergies.