What to watch with Stuhlprobe and allergy?

The question about stool test and allergy is understandable, but the evidence is clear: stool (microbiome) tests are often marketed as 'allergy checkers', yet a direct causal link between gut flora and specific allergies is not well-established. MyBody-X IgE blood tests show sensitization – whether antibodies against certain allergens are present – but not whether an actual allergy with symptoms exists. Many positive IgE results are clinically irrelevant. For children with hay fever symptoms, a doctor's visit and a standardized skin prick test or controlled challenge remain the gold standard. A stool sample can provide insights into gut health (e.g., inflammation markers, diversity) but cannot replace what allergy diagnostics must achieve. So watch out: don't be misled by marketing claims – a stool test is not an allergy test. If you suspect an allergy, always seek specialist medical evaluation.