GCG and polycystic ovary syndrome: In the first study, the Authors observed that GLP-1 levels were similar in PCOS and controls in the early phase of the 75-g oral glucose tolerance test (OGTT) until 60 min, but that GLP-1 levels were significantly lower after 180 min, suggesting that women with PCOS might have reduced GLP-1 secretion in the late postprandial phase [45].