INS and Insulin resistance: In another study including women with BMI at or above 29 kg/m2 who were screened in early pregnancy using a 75 g OGTT, various indexes of insulin sensitivity (oral glucose insulin sensitivity index, quantitative insulin sensitivity check index, and homeostasis model assessment of insulin resistance (HOMA-IR)) and secretion (Stumvoll first and second phases) decreased progressively in women with normal glucose tolerance, eGDM, and DIP [19].