The appropriate peptide storage temperature depends on the peptide format, supplier guidance, and how often the material will be accessed. As a general laboratory practice, unopened dry peptides are commonly kept at -20°C or colder to reduce moisture uptake and slow degradation. For long-term archival storage, some laboratories use -80°C when supported by the product documentation.

Key storage considerations

  • Keep containers tightly sealed to limit exposure to moisture and oxygen.
  • Avoid repeated freeze-thaw cycles by aliquoting only when needed and following validated lab procedures.
  • Protect from light if the peptide is light-sensitive.
  • Store with the original COA and batch records so the material can be traced and handled consistently.

Always follow the supplier’s recommended conditions for the specific peptide, since solvent state, lyophilized material, and formulation can affect stability. If storage requirements are unclear, confirm them against the COA and technical documentation before use. Products are intended for research use only and are not intended for human consumption.