Background: Diabetes is a silent killer. Looking at the alarming presence of diabetes and its morbidity and mortality in India, we need to diagnose this metabolic disorder accurately and at the earliest. We have carried out this study to determine correlation of fasting blood glucose, post meal blood glucose and glycosylated haemoglobin in type 2 Diabetes Mellitus and to find the cut off value of glycosylated haemoglobin to diagnose type 2 diabetes mellitus. Materials and Methods: A cross sectional study was carried out among 298 cases of type 2 Diabetes Mellitus attending a tertiary care centre in Maharashtra during August 2018 to August 2020. Results and Conclusions: Majority were males and in the age group of 41 to 50 years. Fasting Blood Glucose (FBS) and Postprandial Blood Glucose (PPBS) are strongly correlated to Glycosylated Haemoglobin (HbA1c). Association between FBS and PPBS is statistically significant. Correlation of PPBS and HbA1c is stronger than that of FBS and HbA1c. Cut off level of HbA1c is higher in the study subjects in comparison to standard cut off value of 6.5%.
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