The HbA1c test, which measures average blood sugar levels over two to three months, can be unreliable for some individuals due to conditions such as anaemia, liver disease, and pregnancy. Dr. Vijay Negalur, Head of Diabetology at KIMS Hospitals in Thane, emphasizes the importance of a more personalized approach to blood glucose monitoring. He advocates for Continuous Glucose Monitoring (CGM) as one of the best tools available, which uses a small sensor placed under the skin to track glucose levels continuously. This method provides detailed insights into glucose trends and responses to various factors like meals and stress. For those unable to access CGM, structured self-monitoring of blood glucose (SMBG) with a glucometer is recommended. Dr. Negalur also highlights fructosamine testing as a useful alternative for shorter-term monitoring. Ultimately, a combination of these tools tailored to individual needs is essential for effective diabetes management.