The Definitive Peptide Research Reference Guide — Compound Review

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How to Reconstitute Peptides

A complete step-by-step protocol for reconstituting lyophilized research peptides with bacteriostatic water — including concentration calculations, storage guidelines, and troubleshooting.

Gather Your Supplies

Before beginning, assemble all required materials: lyophilized peptide vial, bacteriostatic water (BAC water), insulin syringes, alcohol swabs, and a clean work surface. Working with incomplete supplies mid-process increases contamination risk.

Calculate Your Reconstitution Volume

The amount of BAC water you add determines the concentration of your solution. This affects how much you draw for each dose. A 5mg peptide vial reconstituted with 2mL BAC water yields a 2.5mg/mL (2500mcg/mL) concentration.

Prepare the Vials

Sterile technique is essential. Wipe both vial tops with alcohol swabs and allow to dry completely. Draw the calculated BAC water volume into the syringe and inject slowly down the side of the peptide vial — never directly onto the powder.