The Metabolic Panel 1 Calibrator Blend is a lyophilized blend of seven metabolic proteins, each containing known concentrations of recombinant proteins (insulin, glucagon, and leptin) and synthetic peptides (C-Peptide, GIP (1-42), PP, and amidated GLP-1 (7-36)). The Metabolic Panel 1 Calibrator Blend is supplied as a lyophilized powder that yields top-of-curve calibrator concentrations upon reconstitution in 1 mL of assay diluent.