Guide

Peptide Storage & Handling Guide

Best practices for maintaining peptide purity, stability, and research integrity.

Store at -20°C (freezer) long-term Avoid freeze-thaw cycles Use Bacteriostatic Water for reconstitution

Unreconstituted (Lyophilized) Peptides

Store dry, lyophilized peptides in their original sealed vials. For maximum stability:

  • Keep at -20°C (freezer) for long-term storage.
  • Short-term (under 2 weeks): may be stored at 4°C (refrigerator).
  • Protect from moisture, light, and temperature fluctuation.

Always allow vials to reach room temperature before opening to prevent condensation.

After Reconstitution

Once mixed with Bacteriostatic Water or another sterile diluent:

  • Store at 2–8°C (refrigerator).
  • Do not freeze after reconstitution.
  • Use within 30 days for best stability and purity.

Always use aseptic technique when reconstituting to prevent contamination.

Reconstitution Instructions

Recommended procedure for preparing peptides for research:

  • Clean the vial tops with alcohol swabs.
  • Slowly inject Bacteriostatic Water down the vial wall to avoid foaming.
  • Gently swirl (do not shake) until the solution becomes clear.

Use only sterile, non-pyrogenic Bacteriostatic Water to maintain peptide integrity.

Stability Considerations

Improper handling can degrade peptides, reducing purity and research accuracy:

  • Avoid repeated temperature cycling between frozen and thawed states.
  • Label vials clearly with reconstitution date and solvent used.
  • Discard any solution showing cloudiness or particulate matter.

Handling & Safety

Method Peptides products are for research use only. When handling peptides:

  • Wear gloves and lab-appropriate PPE.
  • Avoid inhalation or direct skin contact.
  • Dispose of unused material according to laboratory safety standards.

*All Method Peptides products are intended strictly for laboratory research purposes. Not for human or veterinary consumption.