HbA1c (Glycated haemoglobin) is better than fasting glucose for determining risks of cardiovascular disease and death from any cause and its monitoring in diabetic patients may improve treatment.Therefore, attempt is made to study the complications prevalent in patients with long–standing diabetes and their co–relation with the HbA1c levels . Objectives 1. To measure the HbA1c levels of the patients with type 2 diabetes of chronic duration. 2. To co–relate HbA1c levels with the prevalence of complications in patients with type 2 diabetes. Methodology Observational study including 102 subjects having diabetes for > 10 years of either sex after taking informed consent were included. For analysis patients were divided into two groups as those with a HbA1c value < 7% and with well controlled sugars; and those with HbA1c value of > 7%. Results and Conclusions All microvascular or macrovascular complications had a direct co–relation with increasing values of HbA1c. HbA1c value of >7% was significantly associated with presence of complications.