Secretin Blocking Peptide 50ug. Secretin Blocking Peptide, Formulation 50 ug (0.5 mg/ml) in PBS (pH 7.2) with 0.01 % BSA, 0.03 % ProClin and 50 % glycerol, Storage Conditions -20 deg C, peptide is used for blocking the antibody activity of Secretin, Size: 50ug