Peptide handling and storage

Peptides are shipped at ambient temperature by standard shipment process (FEDEX, USPS, DHL…).

NuScience Peptides are delivered as lyophilized powders. The apparent volume of powder can be variable between 2 tubes containing the same quantity. This difference should not be regarded with suspicion. Some peptides, such as short sequences, are highly hygroscopic and therefore can appear as a gel or can be hardly visible.

Short-term storage

Lyophilized peptides are stable at room temperature and can be kept in their initial packaging for several days to weeks. Otherwise, peptides can be stored at 39 °F or colder for up to 3 months, according to your preference and to experimental requirements. Peptides should be protected from intense light.

Long-term storage

We recommend storing peptides at < -4 °F or -112°F for a period longer than 4 months.

Storage of peptides in solution

Peptides in solution are less stable than their lyophilized counterparts. It is recommended to aliquot peptide solutions before freezing them to avoid thaw-refreeze cycles, which can damage peptides. Solution stability depends on the type of solvent, the pH (pH 5-7 is considered as optimal), and the amino acid sequence. Peptides containing Asn, Gln, Cys, Met, Trp or Tyr tend to be less stable. Stock solutions of peptides are best prepared in dry (anhydride) organic solvents to avoid premature hydrolysis. The stability of the aliquots may range from weeks to months. What is globally accepted for peptides in solution is that they are generally stable for 1-2 weeks at +39°F, for 3-4 months at -4°F, and for 1 year at -112°F.

To reconstitute a peptide, watch here “peptide reconstitution”

Handle peptides with care!

NuScience Peptides is acting on behalf of its clients to supply their research peptides. NuScience Peptides does not determine the toxicity of peptides and do not provide safety datasheets. Therefore, it cannot be held responsible in case of an accident.

Nevertheless, we recommend our clients to handle peptides with caution. Lyophilized peptides can be volatile. Some peptides can be toxic for humans, animals or the environment. The use of laboratory personal protective equipment, such as gloves, masks, and safety glasses is mandatory. Finally, it is very important to handle peptides in a clean and well-ventilated room.

Ensure that your peptides are optimally stored and enjoy your experiments!

FDA Disclaimer

THE INFORMATION PRESENTED IN THIS ARTICLE IS PROVIDED FOR EDUCATIONAL AND INFORMATIONAL PURPOSES ONLY. The US Food & Drug Administration has not assessed the statements about NuScience Peptides. Peptides and any related products discussed are not intended to diagnose, cure, or prevent any disease. The products mentioned in this article are designed for in-vitro research only, conducted outside the human body. These products are not medicines or drugs. And the FDA has not endorsed them for any medical condition or ailment treatment. Any bodily introduction into humans or animals is strictly prohibited by law.

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