INS and diabetes mellitus: MI3 points are measured as 10,000/([FPG × fasting plasma insulin level] × [mean OGTT glucose level × mean OGTT insulin level])1/2 at 0, 60, and 120 min after the start of the OGTT, where a normal level is >3.(22) Although glucose tolerance and insulin homeostasis are important factors for evaluating the risk of diabetes, few people in Japan undergo OGTT because it is a time-consuming, costly, and only an optional test.