How to prepare for IgE Allergie Test

Preparation for an IgE allergy test depends on the type of test. For a standard blood test (specific IgE) in a laboratory, no special preparation is usually required, but you should inform your doctor about any medications you are taking. Antihistamines can affect results – depending on their half-life, it is recommended to stop them 3–7 days before the test. Cortisone nasal sprays or eye drops generally do not interfere, but systemic corticosteroids may. For skin prick tests, antihistamines must be paused for at least 3–7 days because they suppress the skin reaction. Certain antidepressants and stomach medications (e.g., H2 blockers) can also interfere. Important: Always consult your doctor before stopping any medication. Home tests (e.g., finger prick) typically measure total IgE or specific IgE against common allergens. They only indicate sensitization, not clinical allergy. A positive result does not necessarily mean you have symptoms. The evidence for home tests is weak – they serve more as a screening tool. For a reliable diagnosis, a doctor visit with a detailed history and possibly provocation tests is necessary. The provided context does not contain specific studies on test preparation, so recommendations are based on clinical practice.