GHK-Cu · Reconstitution Guide
Reconstitution Guide
Reconstitution is the laboratory step of dissolving a lyophilized (freeze-dried) research compound in a sterile solvent so it can be handled as a liquid for study. This page covers the arithmetic for GHK-Cu, a 50 mg vial, as reference bench math. It is preparation chemistry, not a dosing guide, and nothing here is an instruction for use in humans.
The only formula you need
Reconstitution math reduces to one relationship: concentration = mass ÷ solvent volume. Add a known volume of bacteriostatic water to the vial's labeled mass, and the resulting concentration is fixed by that ratio.
For a 50 mg vial of GHK-Cu, adding different volumes of solvent yields the concentrations below. Choose a volume that gives a concentration convenient for your measurement equipment.
- 50 mg + 1 mL bacteriostatic water
- 50 mg/mL
- 50 mg + 2 mL bacteriostatic water
- 25 mg/mL
- 50 mg + 3 mL bacteriostatic water
- 16.67 mg/mL
Preparing the vial (laboratory workflow)
Let both the lyophilized GHK-Cu vial and the bacteriostatic water reach room temperature. Wipe both stoppers with alcohol. Draw the chosen solvent volume and let it run slowly down the inner wall of the vial rather than directly onto the powder pellet, because peptides are shear-sensitive.
Do not shake. Swirl gently or leave the vial to stand until the powder is fully dissolved and the solution is clear. This is standard lyophilate-handling technique used across research settings.
After reconstitution
Once in solution, GHK-Cu is typically stored refrigerated and protected from light, and its stability window is shorter than the dry powder's (see the stability reference). Bacteriostatic water's ~0.9% benzyl alcohol is what allows a reconstituted vial to serve as a multi-sample research stock.
Record the mass, solvent volume, resulting concentration, and date on the vial so downstream measurements trace back to a known preparation. For research use only. Not for human consumption, diagnostic, or therapeutic use.
Available from Blueprint Labs
GHK-Cu 50mg
Third-party tested, GHK-Cu supplied as a research material with a certificate of analysis available.
Questions, answered
How do I calculate the concentration of reconstituted GHK-Cu?
Divide the vial's labeled mass by the volume of solvent you add. For this 50 mg vial, 1 mL of bacteriostatic water gives 50 mg/mL, and 2 mL gives 25 mg/mL. This is bench math for a research sample, not a dosing figure.
What solvent is used to reconstitute GHK-Cu?
Bacteriostatic water for injection (sterile water with ~0.9% benzyl alcohol) is the standard laboratory reconstitution solvent because its preservative lets a vial be sampled over a working window.
Should I shake the vial to dissolve it faster?
No. Standard practice is to add solvent down the vial wall and swirl gently or let it stand, because peptides are shear-sensitive. Shaking is avoided in careful lab handling.
Is this reconstitution guide a dosing recommendation?
No. It is laboratory preparation math only. For research use only. Not for human consumption, diagnostic, or therapeutic use.