was bedeutet nüchtern zur blutabnahme — can a microbiome test help?

Fasting before a blood draw means no food or drink (except water) for 8–12 hours. This is standard for tests like glucose and lipids to avoid dietary interference. A microbiome test (stool sample) cannot replace a fasting blood test. It analyzes gut bacteria composition, not blood metabolites. There is no evidence that a microbiome test helps interpret fasting blood values. These tests are marketed as wellness tools, not medical diagnostics. For accurate fasting blood results, a standard blood draw is required. A microbiome test may provide general insights into gut health but does not measure or predict fasting blood parameters. Always consult a healthcare provider for medical decisions.