wo kann man allergietest machen — when to see a doctor?

Allergy tests are available through an allergist or primary care physician – common methods include skin prick tests, specific IgE blood tests, or oral food challenges. Home test kits (e.g., IgG food sensitivity tests) are sold online, but their clinical validity is often poor. You should see a doctor if you experience symptoms like sneezing, itching, rash, breathing difficulty, or anaphylaxis. For children or pregnant women, medical guidance is essential before any testing. Evidence for home tests is weak; they frequently yield false positives or clinically irrelevant results. An allergist can interpret results in the context of your history and recommend appropriate treatment (antihistamines, immunotherapy, etc.). Without a doctor, you risk unnecessary dietary restrictions or missing a serious allergy. My answer is based on general medical practice, not on specific studies from the provided context.