was kostet ein allergietest — what are common causes?

The cost of an allergy test depends on the type (skin prick test, specific IgE blood test, provocation test) and whether it is covered by public health insurance. In Germany, if there is a medical suspicion, the insurance usually covers the cost; self-payers can expect €30–150 depending on the panel. Common causes include pollen (hay fever), dust mites, animal dander, mold, and foods like peanuts, milk, and eggs. The provided knowledge context does not contain information about allergy tests—it focuses on DNA longevity tests, microbiome tests, and the MC4R gene. Therefore, this answer is based on general medical practice, not on the given sources. Evidence grade: practice (for common causes) and unclear (for costs).