

Metabolic & Repair Research Stack
Metabolic and matrix-remodelling research pairing: RT3 and GHK-Cu.
2 vials · Bacteriostatic water sold separately
What's in this stack
Why this stack
This is the most requested pairing in our order data, and the two compounds sit at opposite ends of the research spectrum, which is precisely why laboratories order them together.
RT3 is a synthetic single-chain research peptide supplied as a lyophilised laboratory reference material. It is third-party tested per batch, with the certificate published on its product page, and holds no marketing authorisation in any jurisdiction.
GHK-Cu is a naturally occurring copper-binding tripeptide, glycyl-L-histidyl-L-lysine complexed with Cu2+, first isolated from human plasma. Its research literature spans collagen and glycosaminoglycan synthesis in fibroblast culture, extracellular-matrix remodelling, and a documented gene-expression signature across several hundred genes. The 100mg research vial is the larger of the two formats we stock.
Both ship as stable lyophilised powders requiring bacteriostatic water reconstitution (sold separately). Research use only, see each component's CoA for lot-specific purity data.
How to use
- Reconstitute each peptide using bacteriostatic water (sold separately) per the lot-specific CoA instructions.
- Store reconstituted peptides at 2-8°C, use within 30 days of mixing.
- Research use only. See CoA for purity data.
Stack FAQ
Can I buy these peptides individually instead?
Yes. Every component in this stack is also sold as a standalone vial on our shop. The stack price reflects a discount applied when the components are purchased together.
Will the stack ship as one parcel?
Yes. All vials in a stack ship together in a single Royal Mail Tracked parcel from our UK facility. Same-day dispatch on orders placed before 2pm GMT.
Do I get a separate Certificate of Analysis for each peptide?
Yes. Each component vial includes its own batch-specific HPLC-UV/MS Certificate of Analysis. CoAs are also published on each individual product page.