Supply-format comparison
Wolverine stack vs single-peptide BPC-157 and TB-500 vials
The Wolverine stack is one lyophilized vial that combines BPC-157 and TB-500 at BPC-157 10 mg + TB-500 10 mg per vial (20 mg total labeled content). Buying each peptide separately gives two single-peptide vials under their own COAs. This page compares the two supply formats — vial count, documentation, storage SOP and analytical workflow — not biological effects. Research use only.
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Supply format at a glance
| Attribute | Wolverine stack (combined vial) | Single-peptide vials (two vials) |
|---|---|---|
| Peptides per vial | 2 (BPC-157 + TB-500) | 1 per vial |
| Vials per experiment | 1 | 2 |
| Lot numbers to track | 1 | 2 |
| COAs to file | 1 (both peptides on one report) | 2 (one per peptide) |
| Vial size on this site | BPC-157 10 mg + TB-500 10 mg per vial (20 mg total) | N/A (not sold here) |
| HPLC main peaks expected | 2 | 1 per vial |
| MS masses expected | 2 | 1 per vial |
| Where supplied | Available from the supplier product listing | Not sold on this site |
Documentation per vial
A combined vial carries one certificate of analysis that reports identity (mass spectrometry) and purity (HPLC) for both peptides on one page. See the batch documentation page for the current layout. Single-peptide vials carry their own COAs, one per lot per peptide.
If a laboratory needs the paper trail to show each peptide independently, two single-peptide vials with two COAs give that directly. If the trail should show the combination as a single supply event, the combined vial is simpler.
Shipping and storage
- Shipping unit. One package vs two.
- Storage SOP. One storage temperature window and shelf-life note apply to the combined vial. Single-peptide vials follow their own SOPs (see the lyophilized peptide storage overview and the product-specific storage & handling page).
- Shipping temperature. Lyophilized peptides typically ship at ambient temperature in both formats (see research-peptide shipping and temperature).
Analytical workflow
A two-peptide vial does not need different methods — HPLC and mass spectrometry are the same tools either way (see purity testing methods). The readout is more demanding:
- HPLC. Two expected main peaks instead of one. The method must resolve both from each other and from any impurity peak, and the integrated purity figure is reported per peak.
- Mass spectrometry. Two expected molecular masses instead of one. Both must appear on the spectrum for the identity claim to cover both peptides.
When each format fits
- Combined vial fits an experiment design that calls for both peptides together, a tighter procurement loop (fewer vials, one lot), or a laboratory that would rather handle a single shipping unit and one COA per lot. The combined-blend overview is on BPC-157 and TB-500.
- Single-peptide vials fit designs that independently vary each peptide or use just one of the two. Single-peptide vials are sourced from separate research-peptide suppliers. The sourcing checklist on where to buy BPC-157 and TB-500 applies to that path.
Sourcing the Wolverine stack
Frequently asked questions
How does the Wolverine stack differ from buying BPC-157 and TB-500 separately?
The Wolverine stack is a single lyophilized vial containing both peptides. Buying each separately gives two single-peptide vials with their own certificates of analysis. The difference is supply format — one vial vs two — not a biological-effect claim.
Why would a lab choose the combined blend?
A combined vial means one certificate of analysis, one shipping unit, one storage SOP, and a single lot number to track. Experiment designs that use the two peptides together carry fewer handling steps and a tighter procurement loop.
When do single-peptide vials fit better?
When the research design calls for one peptide at a time, or for independent variation of each peptide. Single-peptide vials are sourced from separate research-peptide suppliers under their own terms; this site does not list single-peptide vials.
Does the combined vial change the analytical workflow?
Yes. HPLC must resolve two main peaks (one per peptide) instead of one, and the mass spectrometer must observe two expected molecular masses. The analytical methods themselves (HPLC + MS) are the same.
Can I split a combined vial into two separate aliquots?
Only after reconstitution — and the two peptides stay together in solution, so an aliquot from a reconstituted vial still contains both. Dry-powder separation of a lyophilized two-peptide blend is not routine. Dedicated single-peptide vials are the practical path when the design needs each peptide on its own.