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

The question about allergy testing is valid, but the provided context does not contain any specific information on allergy tests. It covers STI tests, DNA tests for metabolism/skin, and a leaky gut panel – none of which are validated allergy tests. For reliable allergy diagnostics, seeing a specialist (allergist) is the only evidence-based approach. Standardized methods include skin prick tests, specific IgE blood tests, and possibly challenge tests. Consumer self-tests (e.g., IgG food sensitivity tests from pharmacies or online) lack scientific validation and often lead to unnecessary dietary restrictions. You should see a doctor if you experience recurrent sneezing, itchy eyes, skin rashes, shortness of breath, swelling, or unexplained gastrointestinal symptoms after eating. In case of severe reactions (anaphylaxis), call emergency services immediately. The evidence for physician-led allergy testing is strong (human-strong), whereas self-tests are weak to misleading.