wie viel stuhl für stuhlprobe — what symptoms are typical?

The question about how much stool is needed for a stool sample and which symptoms are typical is not addressed in the provided context. In general medical practice, most stool tests (e.g., microbiome analysis, fecal occult blood, calprotectin) require a sample about the size of a hazelnut to a walnut (approximately 5–10 g). The sample should be collected from multiple spots of the same bowel movement, avoiding urine or toilet water contamination. Typical symptoms that warrant a stool test include persistent diarrhea, constipation, abdominal pain, bloating, blood or mucus in stool, unexplained weight loss, or chronic fatigue. Since the provided context lacks relevant studies or guidelines on this topic, this answer is based on general clinical practice. The evidence level is therefore 'practice' and not supported by the given sources.