Barn Peptides has a positive first-hand forum track record, yet its site promises a COA for every batch while the COA page shows zero.

barnpeptides.com, a US-facing grey-market reseller with US and China warehouses, run by a vendor called Alex; sells retatrutide, tirzepatide and more.

Where it trips our checks

• COA traceability: the site advertises public HPLC results and a COA for every batch, but the COA page lists 0 products. Breaking its own COA promise is a pattern we see repeatedly in bad actors.
• Irreversible payment: checkout is crypto only, so there is no chargeback if an order goes wrong.
• Purchase protection: no formal refund path; shorted or delayed buyers relied on the vendor's goodwill.
• Contact transparency: no published business name, address, or email, just a web form and a pseudonymous Discord operator.

Bottom line: not an outright scam by the evidence reviewed, but grey-market with no recourse and a COA promise it breaks. A requester reports a failed test, not corroborated here. 4 checks tripped.

— maxg Founder of Ouros Lab. I write the seller research notes here.