GHK-Cu Reconstitution & Dosage Calculator
This free GHK-Cu calculator turns your vial size, the bacteriostatic water you add, and your target amount into a concentration, a draw volume, and the exact number of units on a U-100 insulin syringe. It works in both milligrams and micrograms and is an educational research-planning tool — it does not tell you what amount to use.
Quick summary
- Converts vial size (mg), bacteriostatic water (mL), and target amount (mg or mcg) into concentration, draw volume, and U-100 syringe units.
- Built for the small copper-peptide amounts GHK-Cu is typically studied at, with reference math for 10, 50, and 100 mg vials.
- Educational research and measurement tool only — it does not diagnose, treat, or recommend an amount.
GHK-Cu reconstitution calculator
Syringe
U-100 insulinPeptide in vial
Target amount
Bacteriostatic water
Email this result to yourself
What this GHK-Cu calculator does
This calculator does one job well: it turns your vial size, the amount of bacteriostatic water you add, and your target amount into a concentration (mg/mL), a draw volume (mL), and the matching units on a U-100 insulin syringe. Change any input and the result updates instantly.
GHK-Cu ships as a freeze-dried powder. Before it can be measured into a syringe it has to be reconstituted — dissolved in bacteriostatic water. How much water you add sets the concentration, and the concentration sets how many units each amount works out to. The presets above cover the most common GHK-Cu vial setups; use the custom fields for anything else.
How to use the GHK-Cu calculator
Pick your syringe
Choose the U-100 insulin syringe you'll draw with. Smaller syringes (0.3 mL / 30u) have finer lines, which helps when the draw is small.
Enter your vial and water
Set the milligrams in your GHK-Cu vial and the bacteriostatic water you added. Together these set the concentration.
Set your target amount
Toggle mg or mcg and pick (or type) the amount you're measuring for. The calculator does the conversion for you.
Read the draw
The result panel shows concentration, draw volume, and the exact U-100 units to pull, plus how many doses your vial contains.
GHK-Cu reconstitution math, explained
The math is short. Concentration = vial size ÷ bacteriostatic water. Draw volume = target amount ÷ concentration. Units = draw volume × 100 (a U-100 syringe reads 100 units per mL). The table below shows common GHK-Cu setups and the units for a 1 mg amount at each.
| Vial size | Bac water | Concentration | Units per 1 mg |
|---|---|---|---|
| 10 mg | 1.0 mL | 10 mg/mL | 10 units |
| 10 mg | 2.0 mL | 5 mg/mL | 20 units |
| 50 mg | 2.0 mL | 25 mg/mL | 4 units |
| 50 mg | 2.5 mL | 20 mg/mL | 5 units (clean: 2 mg = 10 units) |
| 50 mg | 3.0 mL | 16.7 mg/mL | 6 units |
| 100 mg | 2.0 mL | 50 mg/mL | 2 units (very concentrated) |
| 100 mg | 3.0 mL | 33.3 mg/mL | 3 units |
GHK-Cu amount-to-units reference
How common amounts convert to U-100 syringe units at two example concentrations. These are arithmetic conversions for reference, not a recommendation of any amount.
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 0.5 mg (500 mcg) | 0.025 mL | 2.5 units |
| 1 mg (1000 mcg) | 0.05 mL | 5 units |
| 1.5 mg (1500 mcg) | 0.075 mL | 7.5 units |
| 2 mg (2000 mcg) | 0.10 mL | 10 units |
| 3 mg (3000 mcg) | 0.15 mL | 15 units |
| Amount | Volume (mL) | U-100 units |
|---|---|---|
| 0.5 mg (500 mcg) | 0.015 mL | 1.5 units |
| 1 mg (1000 mcg) | 0.03 mL | 3 units |
| 1.5 mg (1500 mcg) | 0.045 mL | 4.5 units |
| 2 mg (2000 mcg) | 0.06 mL | 6 units |
| 3 mg (3000 mcg) | 0.09 mL | 9 units |
Mixing, color & storage tips
The blue color is normal
Once reconstituted, GHK-Cu turns the solution a clear blue or blue-green. That color comes from the bound copper and is expected. A solution that looks cloudy, has particles, or has shifted to brown is a reason to discard the vial.
mg vs mcg
Because GHK-Cu amounts are small, some references write them in micrograms rather than milligrams. They describe the same thing at different scales: 1 mg = 1000 mcg. The calculator accepts either — just pick the matching unit.
Mixing without foam
Add the bacteriostatic water slowly down the inside wall of the vial rather than straight onto the powder, then swirl or gently roll — do not shake. Let the powder dissolve on its own before drawing.
Storage and vial life
Keep the dry powder cold and dark. After reconstitution, store the vial refrigerated, keep it out of light, and plan around a limited usable window (commonly a few weeks). Do not freeze a reconstituted vial.
GHK-Cu supplies checklist
A simple reconstitution shopping list. Confirm vial size and batch documentation before you buy.
GHK-Cu
- Batch COA on every vial
- Third-party purity tested
- U.S. fulfillment, discreet shipping
GHK-Cu — frequently asked questions
What does this GHK-Cu calculator tell me?
It converts your vial size, bacteriostatic water volume, and target amount into three numbers: concentration in mg/mL, draw volume in mL, and the matching units on a U-100 insulin syringe. It is a measurement tool, not a recommendation.
Is the GHK-Cu reconstitution calculator free?
Yes. It runs entirely in your browser, is free, and requires no account or signup.
How much bacteriostatic water do I add to a 50 mg GHK-Cu vial?
That depends on the concentration you want. A 50 mg vial with 2.5 mL of bacteriostatic water makes 20 mg/mL, which keeps small amounts landing on readable unit marks. More water gives a larger, easier-to-read draw; less water gives a smaller one.
How many units is 1 mg of GHK-Cu?
At 20 mg/mL it is 5 units (0.05 mL). At 33.3 mg/mL it is about 3 units. Units always depend on your specific concentration, which is why the calculator asks for your exact vial and water.
What is the difference between mg and mcg?
They measure the same thing at different scales: 1 mg equals 1000 mcg. A 1000 mcg entry and a 1 mg entry produce an identical draw.
Why is my GHK-Cu solution blue?
That is expected. The blue to blue-green color comes from copper bound to the peptide. Discard the vial only if the color turns brown or the solution becomes cloudy or shows particles.
How long does a reconstituted GHK-Cu vial last?
Store it refrigerated and dark and plan around a limited usable window (commonly a few weeks). Do not freeze a mixed vial. Keep the dry, unmixed powder cold for longer storage.
Is GHK-Cu FDA-approved?
No. GHK-Cu appears in topical cosmetic products and is otherwise sold as a research-use-only compound. It is not an FDA-approved injectable drug.
Is this medical advice?
No. This page and calculator are for education and research planning only. They do not diagnose, treat, or recommend an amount. Products referenced are sold strictly as research chemicals and are not for human or veterinary use.
Sources & further reading
- Dr. Loren Pickart is the primary researcher associated with the GHK and GHK-Cu peptides; his published work is the standard starting point for the compound.
- PubMed — peer-reviewed literature on GHK-Cu (copper tripeptide-1).
- General peptide reconstitution and storage best practices (technical handling references).
