How long does reconstituted peptide last in fridge

The shelf life of reconstituted peptides in the refrigerator can vary depending on several factors, including the nature of the peptide, the storage conditions, and the presence of preservatives. Try fast synthesis at a competitive price. Here are some general guidelines:

  1. Peptide Stability: Peptide stability can vary widely. Some peptides are more stable than others. Factors like amino acid composition, sequence, and post-translational modifications can influence stability.

  2. Preservatives: Some peptides are more stable when reconstituted in a buffer containing preservatives, such as sodium azide or phenol red. These additives can help inhibit bacterial growth and extend the shelf life of the peptide solution.

  3. Storage Temperature: Refrigeration at 2-8°C is the standard storage temperature for reconstituted peptides. Storing at lower temperatures, such as -20°C or -80°C, can extend the shelf life significantly.

  4. Container Type: Using airtight and sterile containers can help prevent contamination and improve stability.

  5. Handling: Avoid frequent freeze-thaw cycles, as they can degrade peptides. If you need to use the peptide multiple times, aliquot it into smaller portions to minimize freeze-thaw cycles.

  6. pH: The pH of the peptide solution can also affect stability. Ensure that the pH is within the recommended range for the specific peptide.

  7. Manufacturer's Recommendations: Check the manufacturer's guidelines for the recommended storage conditions and shelf life of the specific peptide you are using.

In general, reconstituted peptides stored in the refrigerator (2-8°C) can remain stable for several days to a few weeks. However, for longer-term storage, especially if you want to extend the shelf life, it's advisable to aliquot the peptide into small portions and store them at lower temperatures, such as -20°C or -80°C. This can extend the shelf life for several months to a year or more, depending on the peptide's stability.

Always follow the manufacturer's instructions and recommendations for the specific peptide you are working with, as they may provide more accurate information on storage and stability. Additionally, keep detailed records of the date of reconstitution and storage conditions to help you track the shelf life and ensure the quality of your peptide solutions.