For the doctors' arrival at home, the order amount must be more than 50 AZN. Glycohemoglobin (HbA1C) is a combination of hemoglobin and glucose. Indicates the average glucose level over the past 3 months. It is the most accurate and necessary test for both diagnosing and monitoring diabetes treatment. How to take the test Do not eat for 2-3 hours before the test, you can drink pure non-carbonated water.