 4. Current or previous use within the past year of the following medications: diabetes related medications or insulin; metformin; growth hormone; glucagon; dipeptidyl peptidase-4DPP-4 inhibitors saxagliptin, stigagliptin; glucagon-Like Peptide-1GLP-1 mimetics exenatide, liraglutide; sulfonylurea medication or other potential confounding medications 