What should I know about vor blutabnahme kaffee?

The question about coffee before a blood draw is valid, as caffeine and other coffee compounds can affect many lab values. For standard fasting tests (glucose, lipid panel), strict fasting of 8–12 hours is recommended, which includes avoiding black coffee. Caffeine can transiently raise cortisol, blood sugar, and heart rate. For specific tests like AMH (anti-Müllerian hormone) or hsCRP (high-sensitivity C-reactive protein), the evidence is mixed: AMH appears relatively stable to short-term dietary influences, while hsCRP may be slightly elevated by acute inflammation or caffeine. The provided context documents do not contain specific guidance on coffee before blood draw. Therefore, this answer relies on general clinical practice. Patients should always follow their physician's or lab's instructions. When in doubt, it is safest to abstain from coffee until after blood collection. For long-term glucose monitoring or oral glucose tolerance tests, coffee is contraindicated.