wie stuhlprobe aufbewahren — when to see a doctor?

Storing a stool sample for diagnostic tests (e.g., microbiome analysis, calprotectin, occult blood) follows clear practical rules: collect in a sterile container, store cool (4–8 °C) and protected from light, and deliver to the lab within 24 hours. Longer storage or freezing can alter bacterial composition. Avoid contamination with urine or toilet water. When to see a doctor: persistent diarrhea (over 3 days), blood or mucus in stool, unexplained weight loss, severe abdominal pain, fever, or changes in bowel habits (e.g., alternating constipation and diarrhea). These signs may indicate infections, inflammatory bowel disease (IBD), or other serious conditions. A self-test does not replace medical evaluation. Evidence for storage recommendations is based on laboratory standards, not clinical trials. For symptoms, doctor consultation is strongly evidence-based (guidelines).