GHK-Cu dosing chart (mg to units)
The GHK-Cu vial documented in PinPoint contains 50 mg, a larger total than most peptide vials in this chart collection. Its profile describes a naturally occurring copper tripeptide and gives it Limited human research status, with an explicit low-confidence model flag.
Vial concentration
Water mL is treated as final solution mL in these columns.
| Vial contents | 1 mL water | 2 mL water | 3 mL water |
|---|---|---|---|
| 50 mg | 50 mg/mL2 U-100 units per mg | 25 mg/mL4 U-100 units per mg | 16.6667 mg/mL6 U-100 units per mg |
Vial source: PinPoint/Data/CompoundLibrary.swift, line 695, the GHK-Cu entry. One documented amount is available.
Amount to units
Example amounts (arithmetic only, not doses).
| Amount (mg) | 50 mg + 1 mL | 50 mg + 2 mL | 50 mg + 3 mL |
|---|---|---|---|
| 1 mg | 2 units | 4 units | 6 units |
| 2.5 mg | 5 units | 10 units | 15 units |
| 5 mg | 10 units | 20 units | 30 units |
| 10 mg | 20 units | 40 units | 60 units |
| 25 mg | 50 units | 100 units | 150 unitsover one syringe |
Cited amounts
No cited amount is listed for GHK-Cu; the amount table contains arithmetic examples only.
How to read this chart
Find the concentration column. Divide the amount by that concentration. Multiply the mL value by 100 for U-100 units. Match the amount units before dividing.
units = amount ÷ (vial mg ÷ water mL) × 100
Amount and volume
One mg equals 1,000 mcg; 100 U-100 units equals 1 mL. Concentration connects amount to volume. Read the full conversion guide.
Topical literature and the systemic model
PinPoint's GHK-Cu description distinguishes the better-described topical and endogenous-peptide literature from the less-characterized systemic injectable profile. Its pharmacology citation is classified as a peer-reviewed review. The entry lists both subcutaneous and topical routes, so the route attached to a log provides information that the compound name cannot supply on its own. The app's base numerical coefficients sit within that evidence context. They are not a statement that the same absorption profile has been measured for both of the listed routes.
The half-hour timing reference
GHK-Cu has a stored half-life of 0.5 hours. Alongside it are a 0.25-hour peak-time parameter and a 0.60 base bioavailability coefficient, corresponding to 15 minutes and 60%. These are short time references within an entry whose frequency text reads Once daily. A timestamped event can therefore have a narrow modeled shape within a much wider daily log. Moving the event time shifts that shape along the clock, whereas changing its mg amount changes the quantity associated with the event.
What a 50 mg package changes
The vial amount is sourced from a supplier catalog for 50 mg of lyophilized GHK-Cu. At 1 mL the concentration is 50 mg per mL; at 2 mL it is 25 mg per mL. Those values are ten times the concentrations of a 5 mg vial represented at the same volumes. That comparison explains why borrowing a unit marking from a smaller peptide vial would produce a different mg amount. The package total is part of the conversion, even when both containers share the same liquid volume.
The example rows for this larger vial
The GHK-Cu amount table runs through 1, 2.5, 5, 10, and 25 mg. Each value is calculated from the 50 mg total rather than copied from a preset list. At 25 mg per mL, the 2.5 mg example is 0.1 mL, while the 10 mg example is 0.4 mL. Their U-100 equivalents are 10 and 40 units. The app logs GHK-Cu in mg and places it in the peptide category; the syringe scale is an additional volume representation of those amounts for the compounded-vial calculation.
Questions about the conversion
What concentration is GHK-Cu at 50 mg in 1 mL?
50 mg divided by 1 mL is 50 mg per mL. That volume spans 100 U-100 syringe units.
How does 2 mL change the concentration of this GHK-Cu vial?
50 mg divided by 2 mL is 25 mg per mL, half the concentration in the 1 mL column.
What does the 3 mL column mean for GHK-Cu?
50 mg divided by 3 mL is approximately 16.6667 mg per mL. The full 3 mL volume corresponds to 300 U-100 units.
How many units is 5 mg of GHK-Cu from this vial in 2 mL?
5 mg divided by 25 mg per mL is 0.2 mL, or 20 U-100 units.
Track your calculations in the app
PinPoint for iOS brings vial setup, unit conversion, dose logs, site rotation, and protocol tracking together. Enter vial size and water volume for concentration and syringe units, then log injections with compound, dose, site, and pain level.
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