What to watch with Nährstoffcheck and Allergie?

When combining a nutrient check (Nährstoffcheck) with allergy testing, watch for several key points. For allergy skin prick tests, antihistamines must be stopped 3–7 days beforehand to avoid false negatives – this is established clinical practice. Nutrient checks, especially DNA-based ones, provide only modest hints: variants like MTHFR C677T or CYP1A2*1F have small effect sizes, and no large RCTs show DNA-guided diets outperform standard healthy eating. Microbiome tests may reveal gut imbalances but cannot identify specific allergens. Home allergy tests have high false-positive rates. Safety: never adjust medications (e.g., thyroid hormones) based solely on a DNA test. Evidence is mixed: strong practice for allergy preparation, observational for nutrient genetics. Use both tests as complementary tools, not definitive diagnoses.