Figure 2

(a) Radiochemical purity analysis of [Lys³⁷(¹¹¹In-DTPA)]N-acetyl-GIP_1-42 as determined by HPLC, immediately after labeling. (b) HPLC profile of ¹¹¹In-GIP after 24 hours of incubation in human serum. (c) Overview of stability behavior after various incubation times in human serum.