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GHK-Cu Pen vs Vial UK: Which Is Better for Research?
GHK-Cu pen vs vial: pre-filled pens vs freeze-dried vials, cost per mg compared, and which to choose for research.
Quick answer
A GHK-Cu pen comes pre-filled in a calibrated 3ml cartridge, so there is no mixing and every click measures exactly 0.01ml. A GHK-Cu vial is freeze-dried powder that the researcher reconstitutes with bacteriostatic water. Pens are the easiest and most consistent to measure. Vials are the lowest cost per mg. For laboratory research use only.
GHK-Cu pen vs vial at a glance
| Feature | GHK-Cu Pen | GHK-Cu Vial |
|---|---|---|
| Format | Pre-filled 3ml cartridge | Lyophilised powder |
| Mixing needed? | No | Yes, with bacteriostatic water |
| How it is measured | Dial clicks (1 click = 0.01ml) | Syringe units |
| At MyPep | GHK-Cu + BPC-157 60mg pen, KLOW 80mg pen | GHK-Cu 50mg vial, GHK-Cu 100mg vial |
Free Peptide Calculator UK
Working out reconstitution? Use our peptide calculator to find the bacteriostatic water volume, concentration per ml and pen clicks for any vial or pen strength.
GHK-Cu pen vs vial price UK (cost per mg)
| Product | Price | Cost per mg |
|---|---|---|
| GHK-Cu + BPC-157 60mg pen | £59.99 | £1.00 |
| KLOW 80mg pen | £79.99 | £1.00 |
| GHK-Cu 50mg vial | £24.99 | £0.50 |
| GHK-Cu 100mg vial | £44.99 | £0.45 ⭐ lowest per mg |
A vial also needs bacteriostatic water and syringes, so the full cost of a vial set-up is a little higher than the vial price alone.
How a GHK-Cu pen works
Each MyPep pen holds a 3ml cartridge with 300 clicks. One click is 0.01ml, so the amount per click depends on the total in the pen. GHK-Cu is available in pen form within blends: the GHK-Cu + BPC-157 60mg pen and the KLOW 80mg pen. Per-mg figures for pens are for total peptide.
How a GHK-Cu vial works
A vial holds freeze-dried powder. In the lab it is reconstituted with bacteriostatic water, and the amount drawn up is measured in syringe units. Our free peptide calculator works out the units for any vial and water amount.
Pros and cons
- Pen ✅ no mixing, no syringe maths, every click the same, easy to store.
- Pen ⚠️ costs more per mg than a vial.
- Vial ✅ lowest cost per mg, flexible concentration.
- Vial ⚠️ needs reconstitution, bacteriostatic water and syringes, and more room for measuring errors.
Which should you choose?
If you want the simplest set-up and the most consistent measuring, choose the GHK-Cu pen. If your lab already reconstitutes peptides and wants flexible concentrations, choose the vial.
Frequently Asked Questions
Is a GHK-Cu pen better than a vial?
A pen is easier and more consistent to measure, while a vial gives more flexibility. Which is better depends on the research set-up.
Is a GHK-Cu pen cheaper than a vial?
The lowest cost per mg at MyPep is the GHK-Cu 100mg vial, about £0.45 per mg.
Do you need to mix a GHK-Cu pen?
No. MyPep pens are pre-filled, so no reconstitution or bacteriostatic water is needed.
Is GHK-Cu a licensed medicine?
No. MyPep Biotech GHK-Cu is a research material only. Not for human or veterinary use.
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