Purity is only a
claim until
someone proves it.
We built this company because the peptide industry runs on vague assertions and in-house test results. Every batch we ship carries an independent, third-party certificate of analysis — published, lot-searchable, and yours before you even order.
“The research supply chain has a transparency problem. We refused to be part of it.”
Verified Peptides was founded by researchers who kept running into the same wall: suppliers claiming high purity with zero independent evidence. Internal testing, undisclosed methods, certificates with no lab name. That’s not verification — it’s a document with a number on it.
We exist to do one thing better than anyone else: give researchers complete, honest, independently-verified information about every compound they purchase. That means third-party HPLC purity, LC-MS identity confirmation, and batch-specific COAs that live permanently in a public, searchable database.
No login wall. No expiry. No ambiguity.
Every batch earns its certificate. None are assumed.
GMP-aligned synthesis
Fmoc solid-phase synthesis using pharmaceutical-grade amino acid building blocks. Raw material provenance is documented and available on request.
Internal pre-screen
Our in-house chromatography confirms baseline identity and flags any synthesis anomalies before samples leave our facility. Failed pre-screens are destroyed, not retested into passing.
Independent laboratory analysis
Samples go to an ISO 17025-accredited third-party laboratory. They run HPLC purity, LC-MS identity, and amino acid analysis. Results are returned directly to us — unedited.
ISO 17025 accredited · results unalteredCOA published, batch released
Certificate of Analysis is uploaded to our public lot database. The batch ships only after publication. The COA stays live permanently — no login, no expiry.
Lot-searchable · no account requiredThe difference is in the data, not the marketing.
Specificity over assertions. Every point below is verifiable — we’d expect nothing less from a company with “Verified” in its name.
Every COA comes from a third party
We don’t test and certify our own products. Every purity figure on every COA comes from an ISO 17025-accredited external laboratory with no financial incentive to pass our batches.
Public lot database — no login
Your lot number is searchable on our public COA database before you order. See the HPLC chromatogram, MS data, and exact purity figure. No account, no email, no gatekeeping.
US & EU dispatch, 48-hour SLA
Stock held in both North American and European fulfilment centres. Most orders ship within 48 hours of confirmation. Real-time stock levels are shown on every product page.
Pharmaceutical-grade synthesis partners
We specify Fmoc SPPS with pharma-grade amino acid building blocks and coupling reagents. Synthesis partners operate documented GMP-aligned quality systems. Methodology disclosed on request.
Cold-chain integrity, logged
Continuous temperature and humidity monitoring from our facility to your door. If any batch deviates from validated storage parameters it is destroyed — not sold at a discount.
Technical support from scientists
Our support team has analytical chemistry backgrounds. When you ask a technical question, you get a substantive answer from someone who understands what you’re working on. Average first response: under 2 hours.
Three methods. One standard: certainty.
Each test answers a different question. Together they eliminate ambiguity entirely.
HPLC Purity Analysis
High-performance liquid chromatography measures peptide purity with sub-0.1% resolution. We specify ≥99% area purity on the HPLC trace. The full chromatogram — peak shape, retention time, integration — is included in every COA so you can verify it yourself.
LC-MS Identity Confirmation
Liquid chromatography–mass spectrometry confirms molecular identity by matching observed m/z values against theoretical. A batch cannot ship on purity data alone — sequence identity must be independently confirmed.
Amino Acid Analysis
For complex and longer-chain peptides, AAA provides independent confirmation of composition, sequence coverage, and stoichiometry — catching synthesis errors that HPLC purity alone would miss entirely.
Stability-Validated Storage
Lyophilised peptides are stored under continuously monitored, validated conditions. Reconstitution guidelines and stability windows are included in technical documentation — not guesswork, but measured parameters.
Built by researchers, for researchers
Dr. Daniel Rhys
PhD biochemistry, ETH Zürich. Former research lead at a peptide therapeutics company. Designed our QC framework and analytical protocols from scratch.
Sofia Nakamura
10 years in pharmaceutical analytical chemistry. Manages all third-party laboratory relationships and COA validation. Responsible for our batch release SOP.
Marcus Chen
Specialist in cold-chain logistics and pharmaceutical distribution. Built our US and EU fulfilment network. Zero cold-chain failures since 2021.
Dr. Aisha Okonkwo
MSc analytical chemistry. Handles all technical enquiries directly. If you email us a protocol question, she’s the one answering it.
Verified isn’t in our name by accident
We hold ourselves to three public commitments. If we fall short, we want to know — and we’ll make it right.
Purity independently confirmed
Every batch we sell will carry a COA from a third-party accredited laboratory. We will never ship on internal testing alone, regardless of circumstance.
Radical data transparency
All COAs remain publicly accessible by lot number, indefinitely. We will never remove or alter a certificate after publication, even when data is unflattering.
No compromises on storage
If any batch deviates from validated storage parameters for any reason, it is destroyed — not sold. Researchers’ results depend on material integrity.
Start with materials you can verify.
Browse our catalogue or look up a lot number to see a real COA — no account needed.