wie lange vor blutabnahme nichts essen — what can you do yourself?

The required fasting duration before a blood draw depends on the specific test. For standard metabolic panels (glucose, lipids), 8–12 hours fasting is typical; water is allowed. Coffee, tea, smoking, or chewing gum can skew results. For celiac serology (tTG-IgA), you must continue eating gluten before the test to avoid false negatives. MyBody-X tests usually include instructions. What you can do yourself: Read the test instructions carefully, adhere to the fasting window, stay hydrated with water, avoid alcohol for 24 hours, and note any medications. If unsure, consult your doctor or lab. Evidence is practice-based (standard laboratory medicine). Caveat: Improper fasting can lead to misdiagnosis (e.g., elevated triglycerides).