How much bacteriostatic water do I add to 5mg of GHK-Cu?

The standard preset is to add 2 ml of bacteriostatic water to a 5 mg vial of GHK-Cu. This produces a concentration of 2.50 mg/ml (2500 mcg/ml). Adjust the water volume down if you want a more concentrated solution for smaller syringe volumes, or up if you prefer easier-to-read markings.

How do I convert a GHK-Cu amount to syringe units after reconstitution?

At a concentration of 2.50 mg/ml, a 200 mcg amount of GHK-Cu measures about 8.0 IU (0.080 ml) on a U-100 syringe scale. Divide the amount by the concentration to get the volume in ml, then multiply by 100 to get units. These are reconstitution reference points only, not usage guidance.

How long does reconstituted GHK-Cu last in the fridge?

Reconstituted GHK-Cu in bacteriostatic water typically remains stable for 14 days refrigerated at 2–8°C (36–46°F). BAC water contains 0.9% benzyl alcohol as a preservative. Never freeze, never leave at room temperature, and discard if the solution becomes cloudy or discolored.

What concentration does 5mg GHK-Cu in 2ml water give?

5 mg of GHK-Cu reconstituted in 2 ml of BAC water produces a concentration of 2.50 mg/ml, which equals 2500 mcg/ml. At 200 mcg per draw, this vial yields roughly 25 full draws.

Can I use sterile water instead of BAC water for GHK-Cu?

You can, but it is not recommended for vials drawn across multiple sessions. Sterile water has no benzyl alcohol preservative, so reconstituted GHK-Cu must be used within 24 hours. BAC water allows the vial to last 14 days refrigerated. Use sterile water only if you plan to finish the entire vial in a single session.

Is this a dosage calculator?

It calculates reconstitution and syringe-unit conversion for laboratory research. It does not recommend how much of any compound to use.

How do I read units on a U-100 syringe scale?

A U-100 syringe scale has 100 units per 1 ml, so each unit equals 0.01 ml. For example, at 5 mg/mL, 0.05 ml lines up with 5 units. Multiply any volume in ml by 100 to get units on a U-100 scale.

How much bacteriostatic water do I add to 5mg of GHK-Cu?

The standard preset is to add 2 ml of bacteriostatic water to a 5 mg vial of GHK-Cu. This produces a concentration of 2.50 mg/ml (2500 mcg/ml). Adjust the water volume down if you want a more concentrated solution for smaller syringe volumes, or up if you prefer easier-to-read markings.

How do I convert a GHK-Cu amount to syringe units after reconstitution?

At a concentration of 2.50 mg/ml, a 200 mcg amount of GHK-Cu measures about 8.0 IU (0.080 ml) on a U-100 syringe scale. Divide the amount by the concentration to get the volume in ml, then multiply by 100 to get units. These are reconstitution reference points only, not usage guidance.

How long does reconstituted GHK-Cu last in the fridge?

Reconstituted GHK-Cu in bacteriostatic water typically remains stable for 14 days refrigerated at 2–8°C (36–46°F). BAC water contains 0.9% benzyl alcohol as a preservative. Never freeze, never leave at room temperature, and discard if the solution becomes cloudy or discolored.

What concentration does 5mg GHK-Cu in 2ml water give?

5 mg of GHK-Cu reconstituted in 2 ml of BAC water produces a concentration of 2.50 mg/ml, which equals 2500 mcg/ml. At 200 mcg per draw, this vial yields roughly 25 full draws.

Can I use sterile water instead of BAC water for GHK-Cu?

You can, but it is not recommended for vials drawn across multiple sessions. Sterile water has no benzyl alcohol preservative, so reconstituted GHK-Cu must be used within 24 hours. BAC water allows the vial to last 14 days refrigerated. Use sterile water only if you plan to finish the entire vial in a single session.

Is this a dosage calculator?

It calculates reconstitution and syringe-unit conversion for laboratory research. It does not recommend how much of any compound to use.

How do I read units on a U-100 syringe scale?

A U-100 syringe scale has 100 units per 1 ml, so each unit equals 0.01 ml. For example, at 5 mg/mL, 0.05 ml lines up with 5 units. Multiply any volume in ml by 100 to get units on a U-100 scale.

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How to Reconstitute GHK-Cu

Pre-filled calculator with standard defaults for GHK-Cu: 5 mg vial in 2 ml BAC water.

Standard GHK-Cu Reconstitution Protocol

Add 2 ml of bacteriostatic water to a 5 mg vial of GHK-Cu. This gives a concentration of 2.50 mg/ml. A 200 mcg amount measures about 8.0 IU on a U-100 syringe scale. Store refrigerated at 2–8°C and use within 14 days.

Vial Size

BAC Water

Target Amount

mcg

Concentration

2.50

mg/ml

2500 mcg/ml

Volume per Draw

0.080

Per draw

Syringe Draw

8.0

U-100 syringe scale

Draws per Vial

draws

25.0 exact

Draw to

100

8.0 units

Draw to this line

For laboratory research use only. This tool performs reconstitution math (concentration and syringe-unit conversion) and is not dosing guidance for humans or animals.

GHK-Cu Reconstitution Chart

Common syringe draws at the standard GHK-Cu preset (5 mg in 2 mL BAC water = 2.50 mg/mL). Units are on a U-100 syringe scale (100 units = 1 mL). For laboratory research reference only.

Syringe units (U-100)	Volume	Amount (GHK-Cu)
5 units	0.05 mL	125 mcg
10 units	0.10 mL	250 mcg
15 units	0.15 mL	375 mcg
20 units	0.20 mL	500 mcg
25 units	0.25 mL	625 mcg
30 units	0.30 mL	750 mcg
40 units	0.40 mL	1.00 mg
50 units	0.50 mL	1.25 mg

Change the vial size or BAC water above to recompute the chart for a different GHK-Cu preset. This chart shows reconstitution math, not a usage recommendation.

Step-by-Step: How to Reconstitute GHK-Cu

1

Gather your supplies

A sealed 5 mg vial of GHK-Cu, a vial of bacteriostatic water, a 1 ml U-100 syringe, and an alcohol swab.
2

Add the water

Wipe both vial stoppers with alcohol. Draw 2 ml of BAC water into the syringe and release it slowly down the inside wall of the GHK-Cu vial. Never spray directly onto the powder — the force can damage the peptide.
3

Swirl gently

Gently swirl the vial in a circular motion until the GHK-Cu fully dissolves. Do not shake. The solution should become clear.
4

Calculate the amount

At a concentration of 2.50 mg/ml, a 200 mcg (0.200 mg) amount equals about 8.0 IU on a U-100 syringe scale.
5

Draw and store

Draw the amount you need, then immediately return the vial to the refrigerator at 2–8°C. Use the reconstituted vial within 14 days.

These defaults reflect commonly referenced reconstitution presets for GHK-Cu. Individual research setups may differ. Always verify the concentration against your source and its certificate of analysis. BodyHackGuide publishes for laboratory research and educational purposes only.

GHK-Cu Reconstitution FAQ

More GHK-Cu Resources

GHK-Cu compound page General reconstitution calculator Verify your GHK-Cu COA

Read the full reconstitution guide: how to reconstitute peptides step by step