Although glucagon started to decline after 30 min (t = −30) post SSTR2 antagonism treatment, plasma values were still significantly higher in the respective vehicle-treated control groups (i.e., up to 60 min post-treatment for the HFF group [p < 0.001] and for all time points after 30 min for the T2D groups [p < 0.05 for all time points]). Here, GCG is linked to type 2 diabetes mellitus.