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Vendor & Sourcing Guide

Peptide Storage & Reconstitution: A Complete Quality Guide

How to properly store and reconstitute peptides to maintain purity and potency — and why improper handling is as damaging as poor sourcing.

TPS Editorial
April 2026

Even pharmaceutical-grade peptides can be rendered ineffective or dangerous by improper storage and reconstitution. This guide covers the complete quality chain from vendor to administration.

Storage Requirements

Lyophilized (freeze-dried) peptide powder: stable at room temperature for 2-4 weeks, at 4°C (refrigerator) for 6-12 months, at -20°C (freezer) for 2+ years. Avoid repeated freeze-thaw cycles — aliquot into single-use vials before freezing. Keep away from light (UV degrades peptide bonds). Reconstituted peptide in bacteriostatic water: stable at 4°C for 4-6 weeks. Never freeze reconstituted peptides.

Reconstitution Protocol

Use bacteriostatic water (0.9% benzyl alcohol) for reconstitution — not sterile water (which has no preservative and allows bacterial growth) and not normal saline (which can cause peptide aggregation). Add bacteriostatic water slowly to the lyophilized powder — do not shake, gently swirl until dissolved. Calculate concentration carefully: 2mg peptide + 2mL BAC water = 1mg/mL = 1000mcg/mL.

Why This Matters for Sourcing

Physician-supervised protocols through Alukard include proper reconstitution guidance, pre-measured bacteriostatic water, and storage instructions as part of the protocol. Research chemical buyers are typically left to figure this out independently, with significant risk of improper handling degrading the compound.

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