DPP4 (Dipeptidyl peptidase 4, also known as T-celll activation antigen CD26) is a membrane expressed peptidase which exhibits multiple effects throughout the body. It plays an important role in glucose metabolism. It mediates the degradation of incretins (e.g. GLP-1) and as a target for type II diabetes and cancer treatment. In the DPP4 Activity Fluorometric Assay Kit, DPP4 cleaves a substrate to generate a quenched fluorescent group, AMC (7-Amino-4-Methyl Coumarin, Ex/Em = 360/460 nm). This kit provides a fast, selective and robust way for high throughput activity screening of DPP4. The detection limit is 3 µU per well.