How Much BAC Water for 5mg GHK-Cu?
Quick answer: For a 5mg GHK-Cu vial, adding 2 mL of bacteriostatic water gives a concentration of 2500 mcg/mL. At this concentration, a 250 mcg dose equals approximately 10.0 syringe units on a U-100 insulin syringe. Use the concentration table below to choose the volume that best suits your target dose.
Concentration Table — 5mg GHK-Cu
All syringe unit values assume a standard U-100 insulin syringe (100 units = 1 mL).
| BAC Water Added | Concentration | 250 mcg Dose | 500 mcg Dose |
|---|---|---|---|
| 1 mL | 5,000 mcg/mL | 5.00 units | 10.0 units |
| 2 mLcommon | 2,500 mcg/mL | 10.0 units | 20.0 units |
| 3 mL | 1,667 mcg/mL | 15.0 units | 30.0 units |
| 5 mL | 1,000 mcg/mL | 25.0 units | 50.0 units |
| 10 mL | 500 mcg/mL | 50.0 units | 100 units |
Which BAC Water Volume Should You Use?
- 1 mL — highest concentration (5,000 mcg/mL); best when working with very small dose volumes and large-barrel syringes.
- 2 mL — the most common choice for GHK-Cu; balances concentration with easy-to-measure syringe markings.
- 3 mL — useful when target doses fall on inconvenient unit marks at 2 mL.
- 5 mL — lower concentration makes very small doses easier to measure precisely; larger final volume dilutes the peptide more.
- 10 mL — typically used for large-vial peptides or high-dose protocols; dose volumes will be larger per injection.
Researchers generally select the volume that places their target dose near a clean tick mark on the syringe barrel to minimize measurement error.
Reconstitution Calculator — GHK-Cu
Educational use only. This calculator performs unit math on the values you provide and is not a substitute for medical advice. Verify every calculation independently.
Result
Numbers are computed from your inputs. Verify all calculations independently. Educational use only.
Storage After Reconstitution
Sensitive to light. Store lyophilized vials at 2–8°C in dark conditions; refrigerate reconstituted solution.
Frequently Asked Questions
Frequently asked questions
How much BAC water should I add to a 5mg GHK-Cu vial?+
Adding 2 mL of bacteriostatic water to a 5mg GHK-Cu vial yields a concentration of 2500 mcg/mL — a common starting point that keeps dose volumes practical. Other volumes (1, 3, 5 mL) are also used depending on the desired concentration.
What concentration does 5mg GHK-Cu produce at 2 mL BAC water?+
At 2 mL of BAC water, a 5mg vial produces 2500 mcg/mL. A 250 mcg dose at this concentration equals approximately 10.0 syringe units on a U-100 insulin syringe.
How long does reconstituted GHK-Cu last after adding BAC water?+
Sensitive to light. Store lyophilized vials at 2–8°C in dark conditions; refrigerate reconstituted solution.
Can I use sterile water instead of BAC water for GHK-Cu?+
Bacteriostatic water (BAC water) is preferred because the 0.9% benzyl alcohol preservative inhibits bacterial growth, extending the shelf life of the reconstituted peptide to roughly 30 days. Sterile water lacks this preservative; if used, the reconstituted solution should be used within 24 hours.