A peptide blend is more than two vials in one — the COA changes shape entirely. Here is how New Zealand research labs evaluate blended reference material.
A peptide blend is a co-lyophilised mixture of two or more peptides in a single vial at defined masses. Blends exist for research convenience — a single reconstitution reduces analytical variability across concurrent assays, preserves stoichiometry, and simplifies documentation. This reference summarises what a blend actually is, what a legitimate blend COA must show, and the most common blend patterns in modern research supply.
What a peptide blend COA must show
| Field | What it should report |
|---|---|
| Individual HPLC purity | Purity value per peptide component |
| Individual peptide content | mg per component in each vial |
| Counterion identity and content | Per peptide (acetate or TFA, % by mass) |
| Chromatographic separation | Confirmation that components do not co-elute |
| LC-MS identity | Observed monoisotopic mass per component |
Common peptide blend patterns
| Blend | Components | Research context |
|---|---|---|
| GH secretagogue blend | CJC-1295 + Ipamorelin | GHRH + GHSR dual-axis reference |
| Wolverine blend | BPC-157 + TB-500 | Structural repair models |
| CagriSema pattern | Cagrilintide + Semaglutide | Metabolic combination reference |
Peptide blends FAQ
What is a peptide blend?
A peptide blend is a co-lyophilised mixture of two or more peptides in a single vial at defined masses, supplied for research-workflow convenience.
Why do blends need separate purity values per component?
Only per-component HPLC purity allows a research lab to verify each peptide independently. A combined 'blend purity' figure cannot validate either component.
Where can New Zealand researchers buy peptide blends?
Kiwi Peps supplies pre-blended reference peptides at ≥98% HPLC purity per component with third-party COA and same-day domestic dispatch. Research use only.
