GCG and Hypoglycemia: Steady-state GLP-2 levels during hypoglycemia, euglycemia, and hyperglycemia were similar during GLP-2 infusions (560 ± 110, 510 ± 93, and 511 ± 93 pmol/L) and placebo infusions (13 ± 7.1, 11 ± 3.4, and 9.0 ± 3.2 pmol/L), respectively (Fig. 1A-1C, Table 3).