A Glycosylated Hemoglobin (HbA1c) test is a blood test that measures the percentage of hemoglobin that has been coated with glucose (sugar) molecules. It is used to monitor blood sugar levels over time in people with diabetes.

Pre-test preparation: There is no specific preparation required for an HbA1c test.

Testing method: A small sample of blood is taken from a vein in your arm and sent to a laboratory for analysis.

Common symptoms that may prompt your doctor to order an HbA1c test include: frequent urination, excessive thirst, and blurred vision.

Diagnosis: The HbA1c test is used to diagnose and monitor diabetes, and to evaluate how well treatment for diabetes is working. It reflects the average blood sugar level over the previous two to three months.

Reference range: The reference range for HbA1c is generally considered to be less than 6.5% for non-diabetic individuals. However, for people with diabetes, the American Diabetes Association (ADA) recommends an HbA1c level of less than 7%.
Normal values may vary depending on the laboratory that performs the test.

Medical disclaimer: The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. It is important to follow the instructions given by your doctor or the laboratory performing the test. If you have diabetes or have been advised to have an HbA1c test, it is important to work closely with your doctor to understand the results and any further actions that may be necessary to manage your diabetes.