wie lange vor blutabnahme nichts essen — what symptoms are typical?

The required fasting duration before a blood draw depends on the specific test: for lipid panels (cholesterol, triglycerides) and fasting glucose, typically 8–12 hours without food are recommended. For other tests like thyroid hormones or vitamin D, fasting is often unnecessary. Typical symptoms of prolonged fasting include hunger, mild fatigue, difficulty concentrating, dizziness, or headaches. In sensitive individuals, blood sugar may drop (hypoglycemia), causing shakiness, sweating, or nausea. Water is usually allowed, but coffee or tea with milk/sugar is not. This information is based on general medical practice, not on the provided context. MyBody-X tests are not a substitute for professional medical advice – consult your doctor or lab for specific instructions.