Glucagon is a peptide hormone that plays a vital role in regulating glucose levels in the body. However, during its production process, certain impurities may arise that can affect its purity and potency. These impurities can include related peptides, amino acid residues, and other organic compounds. It is crucial to monitor and control these impurities to ensure the safety and efficacy of glucagon for use in treating hypoglycemia and other medical conditions.