Does medication affect the results of an HbA1c test?

Certain medications can affect blood sugar levels and, therefore, your HbA1c test results. While most diabetes medications such as insulin or metformin won’t directly impact the test, medications like corticosteroids or antipsychotics may raise blood sugar, leading to higher HbA1c readings. It’s important to inform your healthcare provider about all medications you’re taking, including over-the-counter drugs and supplements, as these could influence your glucose control. Your doctor will interpret your HbA1c results with these factors in mind and may adjust your treatment plan accordingly.