Reconstitution Protocol
GHK-Cu Reconstitution Protocol: Bacteriostatic Water & Aliquoting
3 min read•Published 2025-04-13•Quality Peptide USA Research
GHK-Cu is a naturally occurring copper-binding tripeptide complex (Glycyl-L-Histidyl-L-Lysine bound to Cu²⁺). It is one of the most well-characterized peptides in dermal and matrix-remodeling research, with decades of published in-vitro literature on collagen synthesis, antioxidant gene expression, and skin barrier dynamics.. This guide covers reconstitution protocol for GHK-Cu — written for laboratory researchers sourcing US-synthesized peptides from Quality Peptide USA.
Materials Required
To reconstitute GHK-Cu, prepare: a sealed vial of GHK-Cu, bacteriostatic water (0.9% benzyl alcohol), a sterile insulin or tuberculin syringe with appropriate needle gauge, an alcohol prep pad, and a clean laminar flow surface or comparable workspace. Quality Peptide USA stocks both bacteriostatic water and individually wrapped alcohol prep pads as companion lab supplies.
Standard Reconstitution Steps
1. Allow the lyophilized GHK-Cu vial to equilibrate to room temperature for 5–10 minutes. 2. Wipe both vial stoppers with an alcohol pad. 3. Draw the desired volume of bacteriostatic water (commonly 1–3 mL per vial depending on study concentration). 4. Slowly inject the water down the inside wall of the peptide vial — do not inject directly onto the powder. 5. Swirl gently to fully dissolve. Do not vortex or shake aggressively. 6. Inspect the solution: it should be clear, particulate-free, and free of color.
Concentration Math
With 50mg per vial, common research dilutions include 1 mL bacteriostatic water (yielding 50mg/mL), 2 mL (50mg/2 mL), or 3 mL for finer titration. Match the dilution to the volumetric precision of the syringe used for downstream aliquoting. Use the molecular weight (≈ 402.92 g/mol) on the certificate of analysis to convert to molar concentration when required.
Aliquoting and Single-Use Storage
For longer-term studies, aliquot reconstituted GHK-Cu into low-protein-binding microcentrifuge tubes immediately after reconstitution, then store at −20°C in a frost-free freezer. Avoid repeat freeze/thaw cycles — each cycle increases the risk of aggregation and degradation. Working aliquots refrigerated at 2–8°C should be used within the window listed on the GHK-Cu product page.
Research Use Only
All content is for laboratory and in-vitro research contexts only. Not intended to diagnose, treat, or prevent any condition. Not for human or veterinary consumption.
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