Diabetes mellitus is a group of complex multisystem metabolic disorders characterized by relative or absolute insufficiency of insulin secretion and/or concomitant resistance to the metabolic action of insulin on target tissues. 1 The worldwide explosion of this chronic ailment is a major health care burden. The number of people globally with diabetes are projected to rise to 439 million (7.7%) by 2030. 2 Currently, India has 41 million diabetics, and this number is expected to increase to 70 million by 2025. The increased number of diabetics in India is likely due to unprecedented rates of urbanization and lifestyle changes. 3 The increased morbidity and mortality of diabetic patients is mostly attributed to complications of the disease. Hyperglycemia is the immediate metabolic consequence of diabetes, and chronic hyperglycemia leads to several events that promote structural changes in tissues. 1,4 A high prevalence of wide spectrum oral alterations associated with diabetes has been described in literature. To minimize the risk of complications associated with this disease, it is necessary to regularly monitor the glucose levels of diabetic patients. The important aspect in glycemic control is the frequent monitoring of blood glucose levels. 5 Various biofluids that are used to monitor glucose levels include blood and urine. The choice of blood as a diagnostic fluid for clinical testing is clear-cut considering its close relationship to the homeostasis of the body. Because blood circulates throughout all organs, its chemical makeup is a composite of nearly all metabolic processes occurring in the 552673D STXXX10.