What factors can affect the accuracy of an HbA1c test result?

Several factors can influence the accuracy of an HbA1c test result. Conditions like anaemia, kidney disease, or haemoglobin variants can alter the results. Blood transfusions or heavy blood loss can also affect HbA1c levels because these conditions impact the lifespan of red blood cells. Medical conditions that increase red blood cell turnover, such as certain types of anaemia, may result in inaccurate readings. If you have any underlying health issues, discuss them with your doctor before the test to ensure accurate interpretation of the results.