Time spent within target blood glucose range (ie, time in range [TIR]) evaluated through continuous glucose monitoring (CGM) has emerged as an important complementary metric for assessing day-to-day glycaemic control in diabetic patients. In an interview with MIMS Doctor, Dr Tin-Wai Wong, Specialist in Endocrinology, Diabetes & Metabolism at the Ruttonjee Hospital in Hong Kong, discussed the importance of TIR as an adjunct to other glycaemic parameters and shared case studies on how TIR may help fine-tune insulin therapy in patients with type 2 diabetes mellitus (T2DM).