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Directory · Curated list · 291 suppliers

Suppliers with certificates of analysis

Two kinds of supplier appear here, and each card says which. Some have certificates of analysis we hold and have reviewed: batch, laboratory and date as documented. Others link a certificates-of-analysis page on their website that we have not yet reviewed; for those, the COA is the supplier's own claim.

Index updated 24 Sept 2026 · 0 verified · 247 state third-party testing · 291 with a COA page

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  3. #123

    OptimalPep

    —

    6.6
    29 products · Delivery Orders ship via FedEx 2-Day or USPS Priority and usually arrive within 2–3 business days once scanned. · Ships to 36 countries
    Third-party testing statedCOA page linked, not reviewedCard
    View reviewVisit store
  7. #127

    GLP1 Research Lab

    US based

    United States

    6.6Provisional
    11 products · Delivery Domestic (U.S.) delivery typically takes 2–5 business days after processing, depending on FedEx service level and destination.
    Third-party testing statedCOA page linked, not reviewedCardPayPal
    View reviewVisit store
  9. #129

    Pyrox Labs

    GB based

    United Kingdom

    6.6Provisional
    50 products · Ships to 36 countries
    Third-party testing statedCOA page linked, not reviewedCardBank transfer
    View reviewVisit store
  14. #134

    RetaOne Labs

    US based

    United States

    6.6Provisional
    3.5 Trustpilot(12)12 products
    Third-party testing statedCOA page linked, not reviewedCard
    View reviewVisit store
  18. #138

    Nilah Labs

    GB based

    United Kingdom

    6.5Provisional
    4.2 Trustpilot(6)12 products · Delivery Free Royal Mail next day delivery on all orders!. · Ships to 1 country
    Third-party testing statedCOA page linked, not reviewed
    View reviewVisit store
  19. #139

    Elevr

    GB based

    United Kingdom

    6.5Provisional
    4.6 Trustpilot(19)8 products · Ships to 1 country
    Third-party testing statedCOA page linked, not reviewed
    View reviewVisit store
  23. #143

    Ashenix

    GB based

    United Kingdom

    6.5Provisional
    10 products
    Third-party testing statedCOA page linked, not reviewed
    View reviewVisit store
  25. #145

    Ascension Peptides

    US based

    United States

    6.5
    4.8 Trustpilot(78)21 products · Delivery For USA deliveries, please allow 2–5 business days after payment is fully processed and released by your bank. · Ships to 1 country
    Third-party testing statedCOA page linked, not reviewedCard
    View reviewVisit store
  31. #151

    EZ PEPTIDE

    US based

    United States

    6.5Provisional
    19 products
    Third-party testing statedCOA page linked, not reviewedCardPayPal
    View reviewVisit store
  32. #152

    Protynx Labs

    —

    6.5Provisional
    4.4 Trustpilot(12)15 products · Delivery Standard UK Delivery: 2–4 business days. · Ships to 1 country
    COA page linked, not reviewed
    View reviewVisit store
  38. #158

    Core Research Peptides

    US based

    United States

    6.4
    18 products · Delivery Unopened, intact products returned within 14 days of delivery. · Ships to 36 countries
    Third-party testing statedCOA page linked, not reviewedCardCrypto
    View reviewVisit store
  49. #169

    Frontier Aminos

    US based

    United States

    6.4Provisional
    13 products · Ships to 36 countries
    Third-party testing statedCOA page linked, not reviewedCard
    View reviewVisit store
  51. #171

    Australian Peptides

    AU based

    Australia

    6.3
    4.2 Trustpilot(6)6 products · Delivery Free delivery over $550 1–3 day express delivery Dispatched Australia-wide Certificates published for every peptide .
    Third-party testing statedCOA page linked, not reviewedBank transfer
    View reviewVisit store
  52. #172

    Orion Peptides

    —

    6.3Provisional
    58 products · Ships to 1 country
    Third-party testing statedCOA page linked, not reviewedCardBank transferCrypto
    View reviewVisit store
  54. #174

    PX1 Research

    US based

    United States

    6.3Provisional
    84 products
    Third-party testing statedCOA page linked, not reviewedCardBank transferCrypto
    View reviewVisit store
  56. #176

    Futura Biolabs

    —

    6.3Provisional
    4.3 Trustpilot(7)5 products · Ships to 1 country
    Third-party testing statedCOA page linked, not reviewedBank transfer
    View reviewVisit store