Company Overview
The company operates as a research supplier providing chemically synthesized peptides aimed at independent researchers, laboratory scientists, and academic institutions conducting in-vitro studies. The site states that its catalog covers over thirty research-grade compounds alongside written reference pages and side-by-side comparisons. Furthermore, the supplier publishes lot-matched Certificates of Analysis and safety data sheets in the GHS format.
According to the site, every order includes a batch-specific Certificate of Analysis detailing reverse-phase HPLC purity, LC-MS/MS identity confirmation, and endotoxin results from independent laboratories. Orders are processed within one to two business days with same-day dispatch available for orders placed before 2 PM EST, and free standard shipping applies to domestic orders over $150. However, buyers would still need to inquire about specific bulk pricing arrangements and custom synthesis options.
Pros
- Batch-specific Certificate of Analysis included with every order
- Independent third-party HPLC purity verification of at least 99%
- Same-day dispatch for orders placed before 2 PM EST
Considerations
- All sales are final with no returns or refunds accepted
- Shipping restricted to the United States with no international delivery
- No in-house purity testing conducted by the supplier
Score Breakdown
Not currently ranked. We hold suppliers out of the numbered rankings until enough of the rubric has been verified, so that missing information can never work in a supplier's favour:
- overall evidence coverage 56% (needs 60%)
- Wholesale Capabilities 0% verified (needs 60%)
The dimension scores below reflect only what we were able to verify.
Overall score is calculated from these seven dimensions using the house weighting, and each dimension is calculated from the verified criteria beneath it. Open a dimension to see every criterion, its verified state, the source it was verified from and the date it was checked. Comparison pages may re-weight the dimensions for buyer intent.
Testing & Documentation 25%
10.0
16 of 16 verified points met → 10.0/10. Items shown as not confirmed are excluded from both sides of that calculation.
Business Transparency 20%
Not assessed
- ?Registered business entity namedNot confirmed
- ?Verifiable physical addressNot confirmed
- ✓Named team, ownership or leadershipSource: peptide.express/about · checked 2026-09-08Verified
- ✓Direct contact email or phone, not a form onlySource: peptide.express/contact · checked 2026-09-08Verified
- ✓Published terms, shipping and returns policiesSource: peptide.express/terms · checked 2026-09-08Verified
- ✓Operating or shipping jurisdictions disclosedSource: peptide.express/faq · checked 2026-09-08Verified
- ?Business registration independently verifiableNot confirmed
- ?Manufacturing or sourcing origin statedNot confirmed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Wholesale Capabilities 15%
Not assessed
- ?Published wholesale or B2B programNot confirmed
- ?Tiered or volume pricingNot confirmed
- ?Minimum order quantity statedNot confirmed
- ?Bulk quantities (gram scale and above)Not confirmed
- ?Distributor or reseller supportNot confirmed
- ?Private-label programNot confirmed
- ?Custom orders acceptedNot confirmed
- ?Dedicated wholesale enquiry / RFQ processNot confirmed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Manufacturing Capabilities 15%
3.3
- –In-house synthesis rather than resale onlySource: peptide.express/about · checked 2026-09-08Not offered
- ?Manufacturing facility or partner disclosedNot confirmed
- –Stated quality system (cGMP, ISO or equivalent)Source: peptide.express/about · checked 2026-09-08Not offered
- ?Custom sequence synthesis offeredNot confirmed
- –Selectable purity gradesSource: peptide.express/quality · checked 2026-09-08Not offered
- ?Stated production scale rangeNot confirmed
- ✓Lyophilisation / fill-finish capabilitySource: peptide.express/shipping · checked 2026-09-08Verified
- ✓Stability or storage data publishedSource: peptide.express/ · checked 2026-09-08Verified
4 of 12 verified points met → 3.3/10. Items shown as not confirmed are excluded from both sides of that calculation.
Commercial Purchasing 10%
Not assessed
- ?Business account application or approvalNot confirmed
- ✓Quotes and purchase orders supportedSource: peptide.express/about · checked 2026-09-08Verified
- ?Account-level or contract pricingNot confirmed
- ?Multiple business payment methodsNot confirmed
- ?Formal invoicing and documentationNot confirmed
- ?Named contact or account managerNot confirmed
- ?Repeat-order or standing-order supportNot confirmed
- ?Payment terms available to approved accountsNot confirmed
Too little of this dimension could be verified to publish a score, so it is excluded from the overall and the other weights are rebalanced.
Fulfillment & Logistics 10%
8.8
15 of 17 verified points met → 8.8/10. Items shown as not confirmed are excluded from both sides of that calculation.
Website / Buyer Experience 5%
10.0
- ✓Secure, working site with no broken commerce pathsSource: peptide.express/terms · checked 2026-09-08Verified
- ?Usable on mobileNot confirmed
- ✓Product pages with specification detailSource: peptide.express/ · checked 2026-09-08Verified
- ?Search and filtering across the catalogueNot confirmed
- ✓COAs reachable in a few clicksSource: peptide.express/quality · checked 2026-09-08Verified
- ✓Pricing visible or obtainable without frictionSource: peptide.express/ · checked 2026-09-08Verified
- ✓Clear path to the wholesale or B2B routeSource: peptide.express/about · checked 2026-09-08Verified
- ✓Visible support channelsSource: peptide.express/contact · checked 2026-09-08Verified
11 of 11 verified points met → 10.0/10. Items shown as not confirmed are excluded from both sides of that calculation.
Rubric score 8.0 across the 56% of the rubric verified so far, adjusted for evidence coverage to a published score of 7.6. How this is calculated
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