Can HbA1c help with Blutzucker?

HbA1c (glycated hemoglobin) is a well-established biomarker reflecting average blood glucose levels over the preceding 8–12 weeks. It forms when glucose binds non-enzymatically to hemoglobin in red blood cells. Clinically, HbA1c is used to diagnose and monitor diabetes mellitus. Elevated levels correlate with increased risk of diabetic complications. However, HbA1c has limitations: it can be skewed by anemia, kidney disease, hemoglobin variants (e.g., sickle cell), or pregnancy. It does not capture short-term glucose fluctuations or postprandial spikes. For non-diabetic individuals, HbA1c is less sensitive than fasting glucose or oral glucose tolerance tests. In home test kits, HbA1c is available but should be interpreted by a healthcare professional. In summary, HbA1c is a useful tool for long-term glucose control but not a standalone indicator for daily blood sugar management. Evidence: strong clinical studies (human-strong).