Reconstituting lyophilized peptides: general concepts

Lyophilized (freeze-dried) peptides are typically supplied as a stable powder and reconstituted with a diluent — commonly bacteriostatic water — immediately before research use, since peptides in solution degrade faster than in powder form.

General principles

Sterile technique matters: work in a clean area, use fresh sterile syringes and needles for each step, and avoid introducing contaminants into either the peptide vial or the diluent vial. Diluent is generally added slowly, running it down the inside wall of the vial rather than directly onto the powder, to avoid excess foaming which can affect the peptide structure.

What we don't cover here

Exact diluent volumes and concentrations depend on the specific product, the research protocol, and equipment on hand — this article intentionally does not give a specific reconstitution recipe. Refer to the certificate of analysis / product documentation for your specific SKU, and if you have questions about your own research use, contact our team directly.