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Research peptide supplier red flags
Ten signs a peptide vendor isn't worth the risk, and what a trustworthy supplier does instead.
Disclosure: this site is published by Bluum LLC, the company behind Bluum Peptides, our top pick. Use the checklist below to judge any supplier, including us.
| Red flag | What good looks like |
|---|---|
| No COA, or "COA on request" | Public reports for every lot |
| COA without a lot number | Report lot matches the vial label |
| No lab name or report number | Named independent lab you can check |
| HPLC purity only | HPLC purity plus mass-spec identity |
| Every lot is "99.9%" | Real, varying results, including misses |
| Dosing advice or human-use claims | Strict research-use-only position |
| No company name or address | Legal entity, address, reachable support |
| No shipping cutoff or tracking | Stated same-day cutoff and tracking |
| Payment only by untraceable methods | Secure, encrypted checkout |
| No written refund or damage policy | Published policy with clear reporting windows |
How Bluum handles these
Bluum publishes reports for every lot on sale (including five lots under 98% purity), names its labs, tests every peptide lot for HPLC purity and mass-spec identity, sells only for research use to buyers 21+, and lists its legal name, address, shipping and refund policies. Damaged or incorrect shipments must be reported within 48 hours of delivery.
Next: how to read a peptide COA · best research peptide suppliers
Research use only. Research peptides are laboratory reagents for in vitro and analytical research. They are not drugs, supplements or cosmetics and are not for human or veterinary use. Nothing on this site is dosing or medical advice. Buyers must be 21+.
Shop our top-rated research peptide supplier
45 research peptides from $20 · every lot tested for HPLC purity and mass-spec identity · same-day U.S. shipping before 1 p.m. CT
Shop Bluum Peptides → Check a lab report