Published lab records · Calculated grades. Labelled affiliate placements.

Independent lab data

Peptide Vendor List

Peptide vendor list of 491 research peptide companies, ranked by 12,369 independent lab tests. Peptide Vendor Reviews publishes every result with its certificate; open any vendor for its reviews, lab results and store status.

How we rank

491 vendors

Ranked by the shared composite grade and score (0–100): lab results, evidence and reviewed business signals. Select a peptide for a like-for-like comparison.

  1. 1Marvel PepA9399.78% purity$1.05 / mg38 testsLatest China
  2. 2Andy Peps StudioA9299.73% purity$0.74 / mg44 testsLatest China
  3. 3Aavant ResearchA9299.82% purity$0.67 / mg24 testsLatest United States
  4. 4Chimera PeptidesA9199.80% purity$1.29 / mg27 testsLatest
  5. 5Peptide PartnersA9199.43% purity$4.55 / mg104 testsLatest
  6. 6Nantong Guangyuan Chemical GYCA9199.79% purity$3.45 / mg54 testsLatest
  7. 7Orbitrex PeptidesA9099.71% purity$6.59 / mg49 testsLatest United States
  8. 8SPBA9099.40% purity$0.86 / mg15 testsLatest China
  9. 9Royal PeptidesA9099.67% purity$9.99 / mg34 testsLatest United States
  10. 10Warrior MakersA9099.90% purity$14.00 / mg8 testsLatest
  11. 11Bfflist AMOB8999.72% purity$0.85 / mg74 testsLatest
  12. 12PeptiSlimB8999.70% purity$1.14 / mg74 testsLatest United States
  13. 13Inno PeptidesB8999.34% purity$0.86 / mg58 testsLatest
  14. 14Qingdao Sigma Chemical QSCB8999.36% purity$1.11 / mg50 testsLatest
  15. 15SaiyanMedB8999.36% purity$1.73 / mg48 testsLatest China
  16. 16Baoju ChemicalB8999.51% purity$0.36 / mg23 testsLatest China
  17. 17Risynth BioB8999.65% purity$7.93 / mg18 testsLatest United States
  18. 18Verified PeptidesB8999.38% purity$6.13 / mg39 testsLatest US: FL
  19. 19Champion PeptideB8997.70% purity$0.47 / mg18 testsLatest China
  20. 20SubQ SocietyB8999.63% purity$0.89 / mg27 testsLatest
  21. 21M-PeptidesB8999.28% purity$0.92 / mg24 testsLatest
  22. 22Hangzhou Mandy BiotechnologyB8999.43% purity$0.89 / mg38 testsLatest
  23. 23Shanghai JinBei Chemical TechnologyB8999.20% purity$0.76 / mg37 testsLatest China
  24. 24Atomik LabzB8899.62% purity$6.22 / mg44 testsLatest
  25. 25BeiBangAnB8899.36% purity$0.82 / mg71 testsLatest China

Showing 25 of 491 vendors

How to read these rankings

Quality is more than purity

The composite assessment combines lab results, evidence confidence and reviewed business signals. Lab scoring considers purity, quantity, identity and contamination; recency and limited samples affect confidence. Missing business research is not a pass. Inactive and blocked shops follow active ones.

This is the same grade and score shown on every vendor review, peptide page and the home page.

Comparable costs

Average cost is USD per mg from current price listings, averaged within each peptide and then equally across priced peptides. Catalog mix affects this average: select one peptide for a fairer comparison. Missing prices are not zero.

Check the evidence depth

Average purity remains the mean measured purity, not a pass rate. Tests count distinct sample records, including incomplete records. Products count distinct tested or priced peptides, not vial sizes. Latest test is the newest published test date. Selecting a peptide updates every metric to that peptide only. Neither grade nor purity establishes safety.

Read the full testing methodology

Explore vendors by peptide

For product-specific quality assessments and detailed comparisons, open a peptide guide.

Peptide vendors by country

215 of these vendors list a shipping origin. Location affects delivery and customs, not lab quality; use the location filter above to compare shops from one country.

  • China 136
  • United States 55
  • US: FL 3
  • United Kingdom 2
  • US: CA 2
  • Fl 2
  • US CA 1
  • US: NM 1
Chinese peptide suppliers: lab results by shop

Closed peptide vendors

17 vendors here are closed, offline or blocked; they stay listed below active shops so their test history remains checkable. Peptide Sciences stopped selling in March 2026.

Closed peptide vendors and lab-tested alternatives
All peptide vendor reviews A–Z (771)

Shop not on the list?

This directory includes vendors with published tests. No independent tests does not mean a shop is bad, only that its claims cannot be checked yet.

How to verify a peptide vendor

Important information

Peptide Vendor Reviews is a free research tool, not a medical service. Nothing here is medical advice or intended to diagnose, treat, cure, or prevent disease. Consult a licensed physician for personal medical advice. Publication does not imply FDA or other regulatory approval.

We aggregate third-party lab reports but do not guarantee their authenticity or accuracy. Results describe specific samples—not every batch or product you may receive.

Our grades reflect the available reports, not an endorsement of any vendor or product or a guarantee of safety.

Peptide Vendor Reviews earns commissions on some vendor links. Partnerships and commission terms do not affect ratings, grades, or rankings.

You use this information at your own risk, subject to our Terms of Use.

Peptide Vendor List: 491 Peptide Companies Ranked by Lab Tests