Research Blog
Wolverine Stack Reconstitution: mg-to-mL Concentration Math for a Three-Vial Kit
Published
A vial-by-vial reconstitution math guide for the Wolverine Stack's three-vial BPC-157, BPC+TB-500, and GHK-Cu research kit.
For laboratory and research use only. Not for human consumption.
The Wolverine Stack pairs three vials — BPC-157, a BPC-157/TB-500 blend, and GHK-Cu — into a single research kit rather than a single mixed vial. That distinction matters for reconstitution math: unlike a pre-mixed blend, each vial in the stack is reconstituted and calculated separately, using its own labeled mass and its own diluent volume. This guide walks through the arithmetic for each vial in the kit and how to keep the three calculations from getting crossed.
Why a Multi-Vial Kit Is Different From a Multi-Peptide Blend
Our explainer on the Wolverine blend covers the research rationale for pairing these compounds. From a reconstitution standpoint, the key point is that a kit of separate vials keeps every component independently adjustable — each vial has its own mass, its own diluent volume, and its own resulting concentration, with no shared ratio to preserve. That is the opposite situation from a single pre-mixed blend vial, where diluent volume changes every component's concentration proportionally at once.
Vial 1: BPC-157
The standalone BPC-157 10mg vial in the kit follows the standard single-compound formula:
Concentration (mg/mL) = 10 mg ÷ diluent volume (mL)
Reconstituting with 1 mL of bacteriostatic water yields a 10 mg/mL stock; 2 mL yields 5 mg/mL. See our dedicated BPC-157 reconstitution walkthrough for a full worked example and syringe-unit conversion table.
Vial 2: BPC-157 + TB-500 Blend
The BPC + TB500 blend vial is a combined lyophilized preparation, so its labeled mass covers both peptides together. As with any blend, total solution concentration (labeled mass ÷ diluent volume) tells a researcher how much combined peptide mass is in each mL, while the individual BPC-157 and TB-500 fractions have to be read off the vial's Certificate of Analysis and divided by that same diluent volume separately to get each compound's own concentration.
Vial 3: GHK-Cu
The GHK-Cu vial is again a single-compound calculation, independent of the other two vials in the kit:
Concentration (mg/mL) = Total GHK-Cu mass (mg) ÷ diluent volume (mL)
Because GHK-Cu is a copper-tripeptide complex with a different molecular weight than BPC-157 or TB-500 (roughly 403.9 g/mol), a molar-concentration conversion for GHK-Cu will produce a different number than the same mg/mL figure applied to either of the other two vials — the mass-to-volume math is the same formula, but the molecular weights are not interchangeable between vials.
Keeping the Three Calculations Separate
The most common error in a multi-vial kit is applying one vial's concentration figure to a different vial by habit — for example, assuming the BPC-157 vial and the blend vial were both reconstituted to the same mg/mL because they sit next to each other in a research log. Labeling each reconstituted vial immediately with its own mass, diluent volume, resulting concentration, and preparation date avoids this. A simple per-vial table in a lab notebook, updated at the moment of reconstitution rather than from memory afterward, is the most reliable safeguard.
| Vial | Labeled mass | Example diluent | Resulting concentration |
|---|---|---|---|
| BPC-157 | 10 mg | 2 mL | 5 mg/mL |
| BPC-157 + TB-500 blend | Per COA (combined) | 2 mL | Combined mg/mL; per-component from COA |
| GHK-Cu | 100 mg | 2 mL | 50 mg/mL |
Storage Across Three Vials
Each vial in the kit is supplied lyophilized and specified for refrigerated storage (2-8°C) prior to reconstitution. Once reconstituted, all three should be refrigerated, protected from light, and labeled individually — storing three reconstituted vials together in one container without separate labels is the fastest way to lose track of which concentration applies to which vial.
Sequencing Reconstitution When Working Through All Three Vials
There is no required order for reconstituting the three vials, but working through them one at a time — reconstituting, calculating, and labeling a single vial fully before moving to the next — reduces the chance of transposing a calculation between compounds. A researcher who reconstitutes all three vials first and calculates concentrations afterward from memory is far more likely to assign the wrong mg/mL figure to the wrong vial than one who closes out each vial's math before opening the next.
Frequently Asked Questions
Are all three vials in the Wolverine Stack reconstituted with the same diluent volume?
Not necessarily — each vial's diluent volume is chosen independently based on the target concentration for that specific compound. Using the same volume across all three is a convenience choice, not a requirement.
Does reconstituting one vial in the kit affect the concentration of the others?
No. Because the three vials are physically separate, reconstituting one has no effect on the mass or concentration of the others. This is the key difference from a single pre-mixed blend vial.
How is the BPC-157 + TB-500 blend vial's concentration different from the standalone BPC-157 vial?
The standalone vial's labeled mass is 100% BPC-157. The blend vial's labeled mass is split between BPC-157 and TB-500 per the Certificate of Analysis, so the same total mg/mL figure represents less BPC-157 per mL than the standalone vial reconstituted to the same volume.
Can the GHK-Cu vial concentration be directly compared to the BPC-157 vial concentration in mg/mL?
The mg/mL figures are comparable as mass-per-volume numbers, but because GHK-Cu and BPC-157 have different molecular weights, equal mg/mL concentrations do not represent equal molar concentrations between the two compounds.
What's the best way to avoid mixing up concentrations across three vials?
Label each vial immediately after reconstitution with its mass, diluent volume, resulting concentration, and date, rather than relying on vial position or memory. A short per-vial log table, filled in at the moment of preparation, is the standard safeguard.
Does the order in which the three vials are reconstituted matter?
No fixed order is required, but completing the reconstitution, calculation, and labeling for one vial before starting the next reduces the risk of assigning one vial's concentration figure to a different vial.
Reviewed by the Optimized Aminos research team — last updated August 13, 2026.
References
- Goldstein AL, Hannappel E, Kleinman HK. "Thymosin beta4: actin-sequestering protein moonlights to repair injured tissues." Trends Mol Med. 2005;11(10):421-429. pubmed.ncbi.nlm.nih.gov/15709904
- Pickart L, Margolina A. "Regenerative and Protective Actions of the Gly-His-Lys (GHK) Peptide in the Light of the New Gene Data." Int J Mol Sci. 2018;19(7):1987. pubmed.ncbi.nlm.nih.gov/29986520
The full kit is available as the Wolverine Stack research bundle, priced as a set rather than three separate purchases.
For laboratory and research use only. Not for human consumption.
Run the numbers for your own vial
The reconstitution calculator takes a labeled vial mass and a solvent volume and returns the resulting concentration in mg/mL, along with the aliquot volume in microlitres for any target mass — the same arithmetic worked through above, without the decimal-place risk of doing it from memory. Bacteriostatic water (10 mL) is the diluent used in these worked examples, and every compound referenced here is third-party tested with a published COA.