Include the Latin America modified version of FINDRISK (mFR) as screening tool to identify people who need blood testing (OGTT) to diagnose impaired glucose regulation or occult T2D. Prediabetes and unknown diabetes is suspected by Lat mFR score > 14.Recommend an OGTT with a 75 g glucose load and not after a “high carbo breakfast”.Educate physicians to request only fasting plasma glucose and the value 2-h after 75-g of oral anhydrous glucose.Do not use plasma insulin measurements to establish the state of glucose homeostasis or insulin resistance. This evidence concerns the gene INS and diabetes mellitus.