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[Peptide · GHK-Cu · 100 mg vial]

GHK-Cu 100 mg reconstitution: how much water and how many units

Water volume chart · Syringe units · Draws per vial

Short answer: 10 mL of bacteriostatic water in a 100 mg GHK-Cu vial makes 10 mg/mL. On a U-100 insulin syringe (1 mL = 100 units), every 10 units then holds 1 mg. More water gives a weaker solution and a bigger draw for the same amount; the amount in the vial stays 100 mg.

Water volume chart for a 100 mg vial

100 mg GHK-Cu vial, U-100 insulin syringe.
Water addedConcentrationPer 10 unitsPer 1 unit
2 mL50 mg/mL5 mg500 mcg
5 mL20 mg/mL2 mg200 mcg
10 mL10 mg/mL1 mg100 mcg

Syringe units by amount

The amounts below are examples to show the conversion, not doses. How much to take is a decision for you and your prescriber.

Units on a U-100 syringe from a 100 mg vial.
Water added500 mcg1 mg2 mg
2 mLunder 2 units2 units4 units
5 mL2.5 units5 units10 units
10 mL5 units10 units20 units

A 100 mg vial holds 200 draws of 500 mcg, 100 draws of 1 mg, 50 draws of 2 mg, no matter how much water you add.

The math

  1. Concentration. 100 mg ÷ 10 mL = 10 mg/mL
  2. Volume to draw. amount ÷ 10 mg/mL = mL
  3. Syringe units. mL × 100 = units

For a different water volume or amount, the free peptide reconstitution calculator works backwards from the amount you want and suggests a water volume that lands on a clean syringe mark.

Other GHK-Cu vial sizes

GHK-Cu 50 mg

Half-life, time to peak and sources are on the main GHK-Cu guide.

Frequently asked questions

How much bacteriostatic water do I add to a 100 mg GHK-Cu vial?+
There is no single right amount. More water makes each draw bigger and easier to measure; less water keeps the volume small. With 10 mL, a 100 mg vial is 10 mg/mL, so every 10 units on a U-100 insulin syringe holds 1 mg. With 2 mL it is 50 mg/mL (5 mg per 10 units). With 5 mL it is 20 mg/mL (2 mg per 10 units).
How many units is 1 mg of GHK-Cu from a 100 mg vial?+
With 10 mL of water the vial is 10 mg/mL, so 1 mg is 0.1 mL, or 10 units on a U-100 syringe. With a different water volume the units change but the amount does not. The amount is an example for the math, not a recommendation.
How many 1 mg draws are in a 100 mg GHK-Cu vial?+
100 (100 mg ÷ 1 mg), whatever volume of water you add. In practice a little is lost to the syringe dead space and the last drops in the vial.

GHK-Cu guide · All compound guides · Reconstitution calculator