Question 1

How many units is a 1 mg dose of GHK-Cu (100mg vial, 5ml diluent)?

Accepted Answer

5 units on a standard U-100 insulin syringe (0.05 ml). Mixing a 100mg vial of GHK-Cu with 5ml of bacteriostatic water gives a concentration of 20 mg/ml. On a U-100 insulin syringe that means: 1 mg = 5 units · 2 mg = 10 units · 3 mg = 15 units · 5 mg = 25 units.

Question 2

What is the concentration of 100mg of GHK-Cu in 5ml?

Accepted Answer

100mg ÷ 5ml = 20 mg/ml.

Question 3

Which syringe do these unit marks refer to?

Accepted Answer

A standard U-100 insulin syringe, where 100 units = 1 ml. On U-50 or U-30 syringes the same volume reads as half or 30% of the U-100 marks. These are mathematical conversions for organizational purposes only — not medical advice.

Dose	Draw volume	U-100 units
1 mg	0.05 ml	5 U
2 mg	0.1 ml	10 U
3 mg	0.15 ml	15 U
5 mg	0.25 ml	25 U

GHK-Cu 100mg in 5ml — syringe units chart