Vendor ranking
World Wide Peptides publishes this ranking and is included in it. To keep that honest, every vendor is scored on the same six checks a buyer can verify without trusting anyone, every competitor fact links to a third-party page or the vendor's own page with the date it was read, and the scoring method is written out below. The ranking measures buyer protections, not purity results. Where an independent blind-buy database has rated a vendor, that rating is shown as-is.
| # | Vendor | Score /13 | Guarantee | Test record | Cards | Shipping line | FDA record | Open catalog | Trustpilot (info) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | World Wide Peptides | 11 | 3 | 1 | 2 | 2 | 2 | 1 | No profile |
| 2 | BioLongevity Labs | 10 | 0 | 3 | 2 | 2 | 2 | 1 | Removed |
| 3 | Nexaph | 9 | 2 | 1 | 2 | 1 | 2 | 1 | 3.9 (73) |
| 3 | Simple Peptide | 9 | 0 | 2 | 2 | 2 | 2 | 1 | Removed |
| 5 | Core Peptides | 8 | 0 | 3 | 1 | 2 | 2 | 0 | Removed |
| 5 | Modern Aminos | 8 | 0 | 3 | 1 | 2 | 2 | 0 | Removed |
| 5 | Protide Health | 8 | 0 | 1 | 2 | 2 | 2 | 1 | Removed |
| 8 | Ascension Peptides | 7 | 0 | 1 | 2 | 1 | 2 | 1 | Removed |
| 8 | Limitless Biotech | 7 | 0 | 1 | 2 | 2 | 2 | 0 | 3.4 (163) |
| 8 | Polaris Peptides | 7 | 1 | 2 | 2 | 0 | 2 | 0 | 4.2 (35) |
| 8 | Swiss Chems | 7 | 2 | 1 | 2 | 1 | 0 | 1 | Removed |
| 8 | Verified Peptides | 7 | 0 | 2 | 1 | 1 | 2 | 1 | Removed |
| 13 | Biotech Peptides | 6 | 0 | 1 | 1 | 1 | 2 | 1 | Removed |
| 14 | Peptide Partners | 4 | 0 | 2 | 1 | 0 | 0 | 1 | Removed |
| 15 | Alpha Omega Peptide | 3 | 0 | 0 | 1 | 0 | 2 | 0 | 2.7 (12) |
Ties share a rank. "Removed" in the Trustpilot column is Trustpilot's own notice ("This profile has been removed. The business you're trying to find goes against our guidelines"). Trustpilot is shown for information and is not scored, because a missing profile and a removed one are not the same thing and we could not score that difference fairly.
These are the same checks as our vendor vetting guide, scored so that the checks protecting a buyer's money carry the most weight.
3: a written remedy that pays out whatever an independent test shows, plus a reship on a failed result. 2: a written remedy on a failed result. 1: a guarantee is stated but its terms are not publicly readable. 0: a purity figure or "guarantee" headline with no written remedy.
Based on the vendor's Finnrick rating, a blind-buy testing database that rates vendors on a "purity 99.5%+, dose within 35%" standard. 3: 70% or higher. 2: 60-69%. 1: below 60%, or not yet rated by Finnrick but a publicly viewable library of independent lab results. 0: no rating and no viewable results.
2: the vendor states on its own site that it accepts credit or debit cards. 1: not stated, or only shown at checkout. A vendor that can keep a card merchant account in this category is being reviewed continuously by its processor, which is why this is a buyer-protection signal and not a convenience.
2: the vendor states where orders ship from or that fulfillment is domestic, and its international policy is clear. 1: a vague "domestic" or "US-based" claim with no location, or a claim contradicted elsewhere on the vendor's own site. 0: not stated, or hidden behind a login.
2: no warning letter found in the FDA warning-letter database for the company or domain. 0: a warning letter exists.
1: the catalog, prices and policies can be read without an account. 0: a login or application gate.
Guarantee 3: $300 store credit for any independent COA on any order, whatever the result, plus a free reship if purity is below 99% (Returns & Reships). Test record 1: published independent lab results at 99.41% to 99.97% purity in the COA Library, tests we commissioned and tests customers ran and sent in; the $300 guarantee funds the customer's own test on every order. Not yet rated by Finnrick's blind-buy program, which is what this check scores. Cards 2: Visa and Mastercard charged at checkout. Shipping 2: US Next Day from a US warehouse or Overseas Direct, 14-21 business days, both stated. FDA 2: no warning letter found. Open catalog 1.
Sources: Finnrick (no entry), Trustpilot (no profile), FDA warning-letter database (0 records), fetched October 5, 2026.
Guarantee 0: a "99%+ Purity Guarantee" headline with no written remedy found. Test record 3: Finnrick rating 71% on 34 tests (25 passed), latest test September 23, 2026. Cards 2: "We accept payments with all major credit cards." Shipping 2: domestic US delivery stated. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor payments page, Trustpilot, fetched October 5, 2026.
Guarantee 2: a written replacement-or-refund remedy, but the terms conflict on the vendor's own site (99% for three products and 97% for the rest in the FAQ; "over 99% or your money back" in the footer). Test record 1: Finnrick rating 57% on 291 tests (174 passed), latest September 24, 2026, ranked 416 of 457. Cards 2: "all major credit cards." Shipping 1: states a "domestic U.S. facility", while its refund page names Shanghai Nexa Pharma Co. FDA 2: none found. Open catalog 1. Trustpilot: 3.9 from 73 reviews, unclaimed.
Sources: Finnrick, vendor refund page, Trustpilot, fetched October 5, 2026.
Guarantee 0: a purity standard ("the lot COA controls") and a refund only for unopened product. Test record 2: Finnrick rating 62% on 45 tests (26 passed), latest September 24, 2026; the vendor's public archive reports 474 COA files. Cards 2: Visa, Mastercard, American Express stated. Shipping 2: US addresses only, domestic fulfillment. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor FAQ, Trustpilot, fetched October 5, 2026.
Guarantee 0: an average purity (99.45%) is stated, no remedy. Test record 3: Finnrick rating 76% on 6 tests (4 passed), latest September 9, 2026; testing by Vanguard Laboratory stated. Cards 1: not stated on the pages read. Shipping 2: ships from the USA same business day. FDA 2: none found. Open catalog 0: the storefront requires a login. Trustpilot: profile removed.
Sources: Finnrick, vendor about page, Trustpilot, fetched October 5, 2026.
Guarantee 0: testing is described, no remedy; returns for damaged or defective product only. Test record 3: Finnrick rating 79% on 6 tests (5 passed), latest July 20, 2026. Cards 1: not stated. Shipping 2: ships only within the United States via FedEx or UPS. FDA 2: none found. Open catalog 0: "Login for the full experience." Trustpilot: profile removed.
Sources: Finnrick, vendor shipping policy, Trustpilot, fetched October 5, 2026.
Guarantee 0: "99% Purity" headline, no remedy found. Test record 1: listed on Finnrick with no tests and no rating; a COA archive is published (PeptideBenchmark attributes it to Freedom Diagnostics). Cards 2: Visa, Amex, Discover stated. Shipping 2: ships from the USA, US and Puerto Rico only. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor return policy, Trustpilot, fetched October 5, 2026.
Guarantee 0: "third-party tested to guarantee potency", no remedy. Test record 1: listed on Finnrick with no tests and no rating; 85 COA records published on its own page. Cards 2: Visa or ACH stated. Shipping 1: flat-rate domestic shipping stated, no location. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor shipping page, Trustpilot, fetched October 5, 2026.
Guarantee 0: a "99% purity specification", no remedy found. Test record 1: Finnrick rating 54% on 22 tests (7 passed), latest test September 25, 2025, more than a year old. Cards 2: Visa, Mastercard, Amex, Discover shown in the footer. Shipping 2: Pensacola, FL stated; US manufacture claimed. FDA 2: none found. Open catalog 0: "Apply for Research Access." Trustpilot: 3.4 from 163 reviews.
Sources: Finnrick, vendor home page, Trustpilot, fetched October 5, 2026.
Guarantee 1: a money-back guarantee is stated, but its terms page redirects to a login. Test record 2: Finnrick rating 63% on 107 tests (66 of 99 classifiable passed), latest September 16, 2026. Cards 2: Visa, Mastercard, Amex, Discover, Venmo shown in the footer. Shipping 0: not visible without login. FDA 2: none found. Open catalog 0: the home page redirects to a login page. Trustpilot: 4.2 from 35 reviews.
Sources: Finnrick, vendor guarantee page, Trustpilot, fetched October 5, 2026.
Guarantee 2: a written remedy (refund of the test cost and the full order if independent HPLC testing is inconsistent with stated purity). Test record 1: Finnrick rating 47% on 10 tests (4 passed), latest April 28, 2026, ranked 447 of 457. Cards 2: Mastercard and Visa stated. Shipping 1: domestic shipping stated, no location. FDA 0: warning letter dated December 10, 2024; also named as a respondent in a 2025 US International Trade Commission investigation. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, FDA warning letter, Federal Register notice, vendor FAQ, fetched October 5, 2026.
Guarantee 0: a "≥98% purity grade" is stated, no remedy. Test record 2: Finnrick rating 65% on 39 tests (21 passed), latest June 15, 2026; "500+ Published COAs" by Janoshik claimed. Cards 1: not stated on the home page. Shipping 1: "US-based supplier", no location. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor home page, Trustpilot, fetched October 5, 2026.
Guarantee 0: "guarantee 99% or higher purity before shipment" and a 30-day refund with no returns accepted; no test-based remedy. Test record 1: listed on Finnrick with no tests and no rating; results claimed on its own site, lab not named. Cards 1: not stated. Shipping 1: "Based in the USA", no ship-from location. FDA 2: none found. Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, vendor about page, Trustpilot, fetched October 5, 2026.
Guarantee 0: no purity guarantee found; shipped orders cannot be refunded. Test record 2: Finnrick rating 66% on 103 tests (74 of 102 classifiable passed), latest September 24, 2026; 397 COA records published across four labs. Cards 1: methods "presented during checkout". Shipping 0: not stated. FDA 0: warning letter dated August 24, 2026 (ref. 735063). Open catalog 1. Trustpilot: profile removed.
Sources: Finnrick, FDA warning letter, vendor refund policy, fetched October 5, 2026.
Guarantee 0: a refund for unopened product only. Test record 0: listed on Finnrick with no tests and no rating; results not viewable without a login. Cards 1: not visible without login. Shipping 0: not visible without login. FDA 2: none found. Open catalog 0: "Sign In to Browse Products and Pricing." Trustpilot: 2.7 from 12 reviews, unclaimed.
Sources: Finnrick, vendor home page, Trustpilot, fetched October 5, 2026.
Purity results. The test-record check scores how much independently verifiable testing exists, not what it found; the Finnrick ratings above are the closest public measure of that. Price, delivery speed and support quality are not scored either. Koi Peptides was reviewed but left out because it has no Finnrick or PeptideBenchmark record to verify against. Vendors are re-checked monthly; if a fact here is out of date, email support@wwpeptides.com with the source and we will correct it.
On these six buyer-protection checks, World Wide Peptides scores 11 of 13, ahead of BioLongevity Labs (10), Nexaph and Simple Peptide (9). It leads on its written guarantee, card acceptance, stated shipping lines, clean FDA record and open catalog, and backs its published independent lab results with $300 store credit toward any customer's own test.
Because it is the only check that puts the vendor's money behind its purity claim. Most vendors in this list state a purity figure with no written remedy at all.
Ten of the fifteen vendors have had their Trustpilot profile removed for breaching Trustpilot's guidelines, and World Wide Peptides has no profile. A removed profile and a missing one are different things, and we could not score that fairly, so the column is shown for information only.
No. World Wide Peptides publishes this page and accepts no payment or affiliate relationship from any vendor on it.
Of the fifteen, two: Swiss Chems (December 10, 2024) and Peptide Partners (August 24, 2026), both linked above to the FDA's own pages.
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