How many units is each GHK-Cu amount?
At 50 mg + 5 mL (10 mg/mL) on a U-100 syringe:
Generated from the calculator's own functions. Rows are evenly spaced reference amounts, not suggested amounts. Amber readings don't fit a 100-unit barrel.
| Amount | mcg | Volume (mL) | Syringe units |
|---|---|---|---|
| 0.5 mg | 500 | 0.05 | 5 |
| 1 mg | 1,000 | 0.1 | 10 |
| 1.5 mg | 1,500 | 0.15 | 15 |
| 2 mg | 2,000 | 0.2 | 20 |
| 2.5 mg | 2,500 | 0.25 | 25 |
| 3 mg | 3,000 | 0.3 | 30 |
| 4 mg | 4,000 | 0.4 | 40 |
| 5 mg | 5,000 | 0.5 | 50 |
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How much water for each GHK-Cu vial size?
GHK-Cu is sold in 2 common sizes (50 mg, 100 mg). The same water volume gives a different concentration in each, so the same reading means a different amount. Each cell shows mcg per unit with mg/mL in brackets.
| Vial | 2 mL | 3 mL | 5 mL | 10 mL |
|---|---|---|---|---|
| 50 mg | 250 (25) | 166.7 (16.67) | 100 (10) | 50 (5) |
| 100 mg | 500 (50) | 333.3 (33.33) | 200 (20) | 100 (10) |
How much bacteriostatic water for a 50 mg GHK-Cu vial?
2 mL → 25 mg/mL, so 2 mg is 8 units. 3 mL → 16.67 mg/mL, so 2 mg is 12 units. 5 mL → 10 mg/mL, so 2 mg is 20 units. The whole vial holds 25 draws of 2 mg.
How much bacteriostatic water for a 100 mg GHK-Cu vial?
2 mL → 50 mg/mL, so 2 mg is 4 units. 3 mL → 33.33 mg/mL, so 2 mg is 6 units. 5 mL → 20 mg/mL, so 2 mg is 10 units. The whole vial holds 50 draws of 2 mg.
Worked example: 50 mg vial, 5 mL, 2 mg
- Concentration. 50 mg ÷ 5 mL = 10 mg/mL (10,000 mcg/mL).
- Volume. 2 mg ÷ 10 mg/mL = 0.2 mL.
- Units. 0.2 mL × 100 = 20 units on a U-100 syringe.
- Check. One unit holds 100 mcg; 20 × 100 mcg = 2,000 mcg = 2 mg, which matches. The vial holds 25 draws of this size.
GHK-Cu: notes for the arithmetic
GHK-Cu vials are large (50 mg and 100 mg), so with 1–2 mL of diluent the solution is very concentrated and each unit holds a lot of material. Many labs use more diluent (5–10 mL in a larger vial) to keep each unit readable. The reconstituted solution is blue because of the copper.
For the lab procedure itself (materials, aseptic technique, mixing without foaming) see how to reconstitute peptides. For what bacteriostatic water is and how long an opened vial is kept, see the bacteriostatic water guide and the storage guide.
Frequently asked questions
How many units is 2 mg of GHK-Cu?
It depends on the water volume. 50 mg + 5 mL = 10 mg/mL, so 2 mg is 0.2 mL, or 20 units on a U-100 syringe. With 2 mL instead it would be 8 units.
How much bacteriostatic water for a 50 mg GHK-Cu vial?
There is no single correct volume. 2 mL gives 25 mg/mL (250 mcg per unit); 3 mL gives 16.67 mg/mL (166.7 mcg per unit); 5 mL gives 10 mg/mL (100 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How much bacteriostatic water for a 100 mg GHK-Cu vial?
There is no single correct volume. 2 mL gives 50 mg/mL (500 mcg per unit); 3 mL gives 33.33 mg/mL (333.3 mcg per unit); 5 mL gives 20 mg/mL (200 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How many mg of GHK-Cu is 10 units?
10 units on a U-100 syringe is 0.1 mL. At 10 mg/mL (50 mg in 5 mL) that is 1 mg (1,000 mcg). At a different concentration the answer is different.
Is this a GHK-Cu dosing calculator?
It is an arithmetic tool. It converts an amount you enter into a volume and a syringe reading; it does not suggest amounts, schedules or uses. Not approved by the FDA as an injectable drug. Widely used in cosmetics as "copper tripeptide-1".
Sources
Links checked 2026-10-19.