Mercodia Diabetes Antigen Control is designed to be used as a two-level control for human insulin, C-peptide and proinsulin. It is manufactured from human serum and human insulin, C-peptide and proinsulin. Perform the Mercodia Insulin, C-peptide and Proinsulin ELISA assays according to the Directions for Use, handling Mercodia Diabetes Antigen Controls as samples.