GLP1R and pancreatic insulinoma: It was concluded that the GLP-1 receptor tracer labelled with 99mTc has probably the same high potential to find benign insulinoma foci, however, in contrast with ones labeled with 111In and 68Ga, it is still cheaper and easier to obtain, generates lower radiation burden to patients and the staff, and, what is more, it may be potentially useful for the detection with a γ-probe in an intraoperative localization of insulinoma [25].