C-peptide is a 31-amino acid single-chain peptide that is made when proinsulin is split into insulin and C-peptide. They split before proinsulin is released from endocytic vesicles within the pancreas- one C-peptide for each insulin molecule. C-peptide is the middle segment of proinsulin that is between the N-terminal B-chain (30amino acids) and the C-terminal A-chain (21 amino acids).Unlike insulin, Cpeptide has no known physiological function. Due to the fact that C-peptide has a 2-to-5-time longer half-life than insulin, there are higher concentrations of C-peptide than insulin in the peripheral circulation.

The antibody is stable for at least 1 year from the date of receipt when stored at -20°C to -70°C. Reconstituted antibody can also be aliquotted and stored at 4°C for 1 month or at -20°C to -70°C in a manual defrost freezer for many months without detectable loss activity. Please avoid freeze-thaw cycles.

12 months from the date of shipment when stored properly.