Peptides you can trust.
Purity guaranteed.
All products independently HPLC-tested and mass-spec confirmed, backed by certificates of analysis for total confidence. Dispatched from the UK and EU. Free next day delivery.
Shop the catalogue↗
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 product is independently characterised and documented before it ever reaches your bench.
- Identity by mass spec
Every product has been independently checked by LC-MS to confirm its identity - no guesswork.
- Purity by HPLC
Independent reverse-phase HPLC testing quantifies product purity to one decimal place.
- Documented & traceable
Every test result is backed by a certificate of analysis for full traceability.
| 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% ✓ |
Independently tested products.
Every product is independently tested for identity and purity before it joins our catalogue. Representative documentation is published online where available.
Independent LC-MS testing confirms the peptide identity for every product.
Purity quantified through independent reverse-phase HPLC product testing.
Filled under inert gas, crimp-sealed and protected from light.
Representative testing documentation is published online where available.
A supplier that respects your data.
Reference-grade, every order.
Consistent, well-characterised material means reproducible results experiment to experiment. That consistency is the whole product.
Browse catalogueMedian HPLC purity across independently tested products.
Every product independently tested and documented.
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 product purity and confirm identity.
Lyophilised, sealed and dispatched from the UK or EU, typically within 24 hours.
Held to a higher standard.
| Standard | Vialoxa | Grey marketGrey market | Bulk resellerBulk reseller |
|---|---|---|---|
| Independent product testing | ✓ | – | – |
| 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 performs as the published testing indicates.
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.
Are certificates of analysis sent with orders?+
No. Certificates from independent product testing are available to view on the relevant product pages, but they are not sent out with orders.
How are purity figures determined?+
By independent reverse-phase HPLC testing, with identity also confirmed by mass spectrometry.
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 independently tested 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 mean on a certificate of analysis, and how to read each section with confidence.
Read the guide →