Ingredient or product comparison
GHK-Cu Reconstitution: Protocol Comparison
Reconstitution Temperature 20–25°C (room temperature) 2–8°C (refrigerated throughout) Refrigerated method retains 30–40% more copper-binding capacity at 28 days Bacteriostatic Water Injection Direct onto powder, 5–10 seconds Against vial wall at 45°, 15–20 sec
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- Reconstitution Temperature
- 20–25°C (room temperature)
- 2–8°C (refrigerated throughout)
- Refrigerated method retains 30–40% more copper-binding capacity at 28 days
- Bacteriostatic Water Injection
- Direct onto powder, 5–10 seconds
- Against vial wall at 45°, 15–20 seconds
- Wall injection reduces mechanical shear by ~60%
- Pressure Equalisation
- No air injection before draws
- Equal-volume sterile air before each draw
- Prevents contamination on multi-dose vials. Critical for 28-day stability
- Storage Post-Reconstitution
- Refrigerator, any shelf
- 2–8°C, away from light and door
- Light exposure and temperature fluctuation from door opening degrade copper chelation
- Needle Reuse
- Sometimes reused for economy
- Fresh needle every draw
- Reused needles introduce particulates that oxidise copper ions within 72 hours
- Bottom Line
- Loses 35–50% bioactivity by day 14
- Maintains 90%+ bioactivity through 28 days
- The refrigerated protocol requires one extra minute but extends viable peptide lifespan by 2–3 weeks