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Certified by ISSCA in Peru and Colombia•ISSCA World Peptide ConferencePERU 2026•Certified by ISSCA in Peru and Colombia•ISSCA World Peptide ConferencePERU 2026•Certified by ISSCA in Peru and Colombia•ISSCA World Peptide ConferencePERU 2026•Certified by ISSCA in Peru and Colombia•ISSCA World Peptide ConferencePERU 2026•
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Insights

Cold Chain: From Manufacturer to Laboratory

How the integrity of every peptide is preserved from manufacturing to your laboratory.

What is the cold chain and why does it matter?

The cold chain keeps a sensitive compound at controlled temperatures from manufacturing to final use. For peptides it's critical because heat, humidity, and light can break peptide bonds, oxidize amino acids, or cause molecular aggregation — degrading purity and biological activity.

How does temperature affect peptides?

Unopened lyophilized peptides:

  • −80°C: 3-5 years or more.
  • −20°C: 2-3 years.
  • 2-8°C: 6-12 months.
  • 15-25°C: weeks to a few months.
  • Above 30°C: accelerated degradation within days.

Reconstituted peptides:

  • −20°C: 3-6 months (avoid repeated freeze-thaw).
  • 2-8°C: 4-6 weeks.
  • Above 15°C: not recommended.

The journey of a BioPeptideX peptide, step by step

  1. Manufacturing under controlled conditions with an inert atmosphere.
  2. Storage in a cold chamber at 2-8°C or −20°C depending on the compound.
  3. Quality control and COA issuance before shipment.
  4. Packaging with extended-duration cold gel packs to maintain 2-8°C in transit.
  5. Express shipping — Lima 24-48 hours.
  6. Receipt: verify the package arrives cold to the touch.

How to store them upon receipt

Unopened lyophilized:

  • Store at −20°C for maximum shelf life.
  • If you don't have a freezer, refrigerate at 2-8°C.
  • Protect from direct light.
  • Do not open until ready to use.

Reconstituted:

  • Refrigerate immediately at 2-8°C.
  • Use within 4-6 weeks.
  • For long-term storage, freeze in small aliquots.
  • Avoid freeze-thaw cycles.

Signs a peptide may have degraded

  • Cloudy solution or with precipitate.
  • Unusual color: dark yellow or brown.
  • Abnormal smell when opening the vial.
  • Vial with a bulging septum.
  • Package arrived at room temperature or warm.

Frequently asked questions

Can I store lyophilized peptide in the refrigerator? Yes, for use within 3-6 months. For longer periods, use a freezer at −20°C.

Is the peptide damaged if it arrives at room temperature? Lyophilized peptides are robust. Brief exposure generally doesn't degrade them. Contact us if you have concerns.

Can I freeze a reconstituted peptide? Yes, in small aliquots so you don't repeatedly thaw the same vial.

Conclusion

The cold chain ensures peptides arrive with the purity certified by the COA. At BioPeptideX, every step protects the compound's integrity.

Important notice: products sold by BioPeptideX are intended exclusively for scientific research use. They are not therapeutic products and are not approved for human or veterinary use.
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