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.(6) Although glucose tolerance and insulin homeostasis are important factors for evaluating diabetes risk and maintaining health, few people in Japan undergo the OGTT since it is a time-consuming, costly, and optional test.