{
  "identifier": "pp-fda-peptide-warning-letter-census-2026-v1",
  "title": "FDA Research-Peptide Warning-Letter Storefront Census",
  "version": "1.0",
  "publishedDate": "2026-08-23",
  "checkedDate": "2026-08-23",
  "articlePath": "/blog/fda-research-peptide-warning-letters-storefront-census",
  "landingPath": "/research-data/fda-peptide-warning-letters-2026",
  "csvPath": "/data/fda-research-peptide-warning-letter-census-2026-08-23.csv",
  "jsonPath": "/data/fda-research-peptide-warning-letter-census-2026-08-23.json",
  "methodologyPath": "/data/fda-research-peptide-warning-letter-census-methodology-2026-08-23.md",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
  "description": "A census of 13 publicly posted FDA warning letters sent to online research-peptide storefronts from February 2024 through June 2026, with storefront status observed on August 23, 2026.",
  "records": [
    {
      "recordId": "FDA-RP-001",
      "fdaRecipient": "US Chem Labs",
      "warningLetterDate": "2024-02-07",
      "warningLetterId": "669074",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/us-chem-labs-669074-02072024",
      "observedStorefrontDomain": "uschemlabs.com",
      "observedStorefrontUrl": "https://www.uschemlabs.com/product-category/peptides/",
      "status": "Active",
      "accessMode": "Public peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public peptide catalog displayed named products, prices, and add-to-cart controls.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-002",
      "fdaRecipient": "Helix Chemical Supply",
      "warningLetterDate": "2024-02-07",
      "warningLetterId": "668918",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/synthetix-inc-dba-helix-chemical-supply-668918-02072024",
      "observedStorefrontDomain": "",
      "observedStorefrontUrl": "",
      "status": "Inactive",
      "accessMode": "No operating storefront found",
      "countedAsStillSellingPeptides": false,
      "observedSummary": "The cited domain did not respond, a related domain was parked, and no operating successor was identified.",
      "successorAssessment": "No apparent successor found",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-003",
      "fdaRecipient": "Prime Peptides",
      "warningLetterDate": "2024-12-10",
      "warningLetterId": "695156",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/prime-vitality-inc-dba-prime-peptides-695156-12102024",
      "observedStorefrontDomain": "primepeptides.co",
      "observedStorefrontUrl": "https://primepeptides.co/",
      "status": "Active",
      "accessMode": "Public peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public storefront displayed peptide products, prices, calculators, and reconstitution material.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-004",
      "fdaRecipient": "Summit Research Peptides",
      "warningLetterDate": "2024-12-10",
      "warningLetterId": "695607",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/summit-research-peptides-695607-12102024",
      "observedStorefrontDomain": "summitpep.com",
      "observedStorefrontUrl": "https://www.summitpep.com/",
      "status": "Apparent continuation",
      "accessMode": "Public coded peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "The newer Summit Research storefront sold coded RTA and TRZ products and used the warned business name in its terms.",
      "successorAssessment": "Apparent continuation; common ownership not independently confirmed",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-005",
      "fdaRecipient": "Swisschems",
      "warningLetterDate": "2024-12-10",
      "warningLetterId": "695663",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/swisschems-695663-12102024",
      "observedStorefrontDomain": "swisschems.is",
      "observedStorefrontUrl": "https://swisschems.is/",
      "status": "Active",
      "accessMode": "Public peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public storefront displayed peptide products, prices, and add-to-cart controls.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-006",
      "fdaRecipient": "Xcel Research",
      "warningLetterDate": "2024-12-10",
      "warningLetterId": "694608",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/xcel-research-llc-694608-12102024",
      "observedStorefrontDomain": "xcelpeptides.com",
      "observedStorefrontUrl": "https://www.xcelpeptides.com/",
      "status": "Active behind login",
      "accessMode": "Account-gated peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "Visitors had to register or sign in to view the complete peptide catalog and shop.",
      "successorAssessment": "Current storefront associated with the warned business",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-007",
      "fdaRecipient": "USApeptide.com",
      "warningLetterDate": "2025-02-26",
      "warningLetterId": "696885",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/usapeptidecom-696885-02262025",
      "observedStorefrontDomain": "usapeptide.com",
      "observedStorefrontUrl": "https://usapeptide.com/",
      "status": "Commerce site active",
      "accessMode": "No public peptide catalog",
      "countedAsStillSellingPeptides": false,
      "observedSummary": "The site sold supplies and accepted miscellaneous payments while directing visitors to email for a new website; no public peptide catalog was visible.",
      "successorAssessment": "Original domain remains online",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-008",
      "fdaRecipient": "Gram Peptides",
      "warningLetterDate": "2026-03-31",
      "warningLetterId": "721806",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/gram-peptides-721806-03312026",
      "observedStorefrontDomain": "grampeptides.com",
      "observedStorefrontUrl": "https://grampeptides.com/",
      "status": "Maintenance",
      "accessMode": "Maintenance page",
      "countedAsStillSellingPeptides": false,
      "observedSummary": "The site displayed a maintenance notice stating that it would be back soon.",
      "successorAssessment": "Original domain remains online",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-009",
      "fdaRecipient": "Mile High Compounds",
      "warningLetterDate": "2026-03-31",
      "warningLetterId": "721600",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/mile-high-compounds-llc-721600-03312026",
      "observedStorefrontDomain": "milehighcompounds.is",
      "observedStorefrontUrl": "https://milehighcompounds.is/",
      "status": "Active behind login",
      "accessMode": "Account-gated peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "An account gate preceded a peptide catalog using product codes including MHC-3 RT and MHC-2 TRZ.",
      "successorAssessment": "Current storefront associated with the warned business",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-010",
      "fdaRecipient": "PekCura Labs",
      "warningLetterDate": "2026-03-31",
      "warningLetterId": "721709",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/pekcura-labs-721709-03312026",
      "observedStorefrontDomain": "pekcuralabs.com",
      "observedStorefrontUrl": "https://pekcuralabs.com/",
      "status": "Active",
      "accessMode": "Public peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public peptide storefront often emphasized CAS numbers instead of familiar compound names.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-011",
      "fdaRecipient": "Prime Sciences",
      "warningLetterDate": "2026-03-31",
      "warningLetterId": "721805",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/prime-sciences-721805-03312026",
      "observedStorefrontDomain": "prime-sciences.com",
      "observedStorefrontUrl": "https://prime-sciences.com/",
      "status": "Active behind login",
      "accessMode": "Account-gated peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "The site advertised in-stock research peptides but required an account to continue shopping.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-012",
      "fdaRecipient": "Pink Pony Peptides",
      "warningLetterDate": "2026-03-31",
      "warningLetterId": "721088",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/lovega-llc-dba-pink-pony-peptides-721088-03312026",
      "observedStorefrontDomain": "pinkponypeptides.com",
      "observedStorefrontUrl": "https://pinkponypeptides.com/",
      "status": "Active",
      "accessMode": "Public coded peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public catalog used product names including PinkPony-3 RT and PinkPony-2TZ.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    },
    {
      "recordId": "FDA-RP-013",
      "fdaRecipient": "Wholesale Peptide",
      "warningLetterDate": "2026-06-17",
      "warningLetterId": "729447",
      "warningLetterUrl": "https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/wholesale-peptide-729447-06172026",
      "observedStorefrontDomain": "wholesalepeptide.com",
      "observedStorefrontUrl": "https://wholesalepeptide.com/",
      "status": "Active",
      "accessMode": "Public peptide catalog",
      "countedAsStillSellingPeptides": true,
      "observedSummary": "A public catalog displayed product names, prices, quantity controls, and shipping claims.",
      "successorAssessment": "Original business storefront",
      "publicCloseoutLetterFound": false
    }
  ],
  "canonicalUrl": "https://peptideprices.net/research-data/fda-peptide-warning-letters-2026",
  "articleUrl": "https://peptideprices.net/blog/fda-research-peptide-warning-letters-storefront-census",
  "distributions": {
    "csv": "https://peptideprices.net/data/fda-research-peptide-warning-letter-census-2026-08-23.csv",
    "json": "https://peptideprices.net/data/fda-research-peptide-warning-letter-census-2026-08-23.json",
    "methodology": "https://peptideprices.net/data/fda-research-peptide-warning-letter-census-methodology-2026-08-23.md"
  }
}