Peptides you can trust.
Purity guaranteed.
Independently HPLC-tested and mass-spec confirmed, with a certificate of analysis provided for every lot. Dispatched from the UK and EU. Free next day delivery.
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Most ordered this year.
Retatrutide
Reference peptide corresponding to the tri-agonist ingredients profile.
Semaglutide
Long-acting GLP analogue reference used in incretin-receptor research.
Tirzepatide
GIP / GLP dual-agonist reference used in incretin-receptor research.
NAD+
Nicotinamide adenine dinucleotide reference used in sirtuin and redox-biology research.
GHK-Cu
Copper-binding tripeptide investigated in fibroblast and extracellular-matrix research.
MOTS-c
Mitochondrial-derived 16-mer reference used in insulin-sensitivity research.
CJC-1295 & Ipamorelin Blend
Pre-blended GHRH analogue and GHS-R agonist reference (No DAC) for somatotroph research.
BPC-157 & TB-500 Blend
Pre-blended BPC-157 and TB-500 reference for tissue-repair research.
Six families. One standard.
You shouldn’t have to take purity on faith.
Reference materials are only useful if you can trust what is in the vial. Every Vialoxa lot is independently characterised and documented before it ever reaches your bench.
- Identity by mass spec
Every batch is confirmed by LC-MS so the sequence in the vial matches the label - no guesswork.
- Purity by HPLC
Independent reverse-phase HPLC quantifies purity on each lot, reported to one decimal place.
- Documented & traceable
A lot-specific certificate of analysis ships with every order and is archived to its lot number.
| Test | Specification | Result |
|---|---|---|
| HPLC purity | ≥ 99.0% | 99.4% ✓ |
| Mass-spec identity | Conforms | Confirmed ✓ |
| Net peptide content | Report | 92.7% ✓ |
| Moisture (KF) | < 5.0% | 3.1% ✓ |
Characterised before it ships.
Nothing leaves the facility uncharacterised. Each lot moves through the same documented pipeline - identity, purity, fill and traceability - so your data starts from a known quantity.
LC-MS confirms the exact peptide sequence on every batch.
Reverse-phase HPLC, quantified per lot and printed on the certificate.
Filled under inert gas, crimp-sealed and protected from light.
Every vial maps back to its own certificate of analysis.
A supplier that respects your data.
Reference-grade, every order.
Consistent material lot to lot means reproducible results experiment to experiment. That consistency is the whole product.
Browse catalogueMedian HPLC purity across every lot released this year.
Not a reseller - tested and documented lot by lot.
Crimp-sealed and light-protected, vial by vial.
Identity confirmed by LC-MS against the expected mass.
Three documented stages.
Solid-phase peptide synthesis under controlled conditions, then cleaved and purified to specification.
Independent HPLC and mass spectrometry characterise purity and confirm identity for the lot.
Lyophilised, sealed and dispatched from the UK or EU with the matching certificate of analysis.
Held to a higher standard.
| Standard | Vialoxa | Grey marketGrey market | Bulk resellerBulk reseller |
|---|---|---|---|
| Lot-specific certificate included | ✓ | – | – |
| Independent HPLC purity | ✓ | – | ✓ |
| Mass-spec identity check | ✓ | – | – |
| Lot traceability | ✓ | – | ✓ |
| UK & EU dispatch | ✓ | ✓ | – |
| Clear research-use labelling | ✓ | – | ✓ |
What researchers tell us.
The feedback that matters to us is always the same point: the material is what the certificate says it is.
Feedback from verified research accounts · names abbreviated for privacy
Good to know.
The essentials on quality, documentation and how we handle research materials. Still curious? Reach the team any time.
What does "research use only" mean?+
Everything we supply is an unlicensed reference standard for laboratory research by qualified professionals. It is not a medicine, supplement or cosmetic, and it is not for human or veterinary use.
What is included on the certificate of analysis?+
The lot number, product identity, appearance, storage conditions, HPLC purity, mass-spec identity confirmation, net peptide content and moisture, each against its specification.
How are purity figures determined?+
By independent reverse-phase HPLC on the specific lot you receive - not a supplier estimate or a figure carried over from a previous batch.
How are orders packaged and dispatched?+
Vials are lyophilised, filled under inert gas, crimp-sealed and protected from light, then dispatched from the UK or EU - typically within 24 hours of payment clearing.
Who can purchase from Vialoxa?+
Buyers must be 18 or over and purchasing for laboratory research purposes. Placing an order confirms you accept our research-use terms.
Stock your bench with material you can trust.
Browse the full catalogue of COA-verified reference peptides. For laboratory research use only.
Shop the catalogue↗Research use only. Not for human or veterinary consumption.
Products supplied by Vialoxa are unlicensed reference standards intended solely for laboratory research by qualified professionals. They are not medicines, dietary supplements or cosmetics.
Handling notes from the laboratory
How to reconstitute lyophilised peptides
Step-by-step laboratory guide to reconstituting lyophilised reference peptides with bacteriostatic water, including volume calculations and handling errors to avoid.
Read the guide →Peptide storage and stability in the laboratory
How to store lyophilised and reconstituted research peptides: temperature ranges, light and moisture control, freeze-thaw limits and realistic shelf-life expectations.
Read the guide →How to read a peptide certificate of analysis
What HPLC purity, LC-MS identity confirmation and net peptide content actually mean on a certificate of analysis, and how to tell a per-lot certificate from a representative one.
Read the guide →