Cathy Peptides is Cathy Taylor of Peptronix Biotech (PTB), confirmed from her own vendor posts; she publishes Janoshik lab reports, but the COAs carry no batch number to tie a report to the vial a buyer receives.

A China-based peptide vendor (Peptronix, PTB) selling to the US through Telegram and peptronix.com, paid in crypto.

Where it trips our checks

• COA traceability: test reports are posted, but with no batch number a COA cannot be matched to the vial shipped. A COA that can't be tied to your batch is a pattern we see repeatedly around bad actors.
• Irreversible payment: payment is crypto only (BTC, USDT, USDC), with no card checkout or chargeback.
• Purchase protection: the reship or refund guarantee is seller-stated, resting on the buyer proving customs seizure or sub 98% purity.
• Independent feedback: one glp1forum buyer rated PTB neutral, all items delivered in 40 days, but Cathy went silent on a tracking request after promising to follow up.

Sources

• Seller's own surfaces: Cathy Taylor's vendor posts on Telegram (@Cathy_PePTB) and peptronix.com — the source of the identity, the Janoshik COAs with no batch numbers, and the seller-stated reship guarantee.
• Independent buyer: one glp1forum account rated PTB neutral, all items delivered in about 40 days, with a comms lapse on a tracking request.
• Cross-check: the positive comments run inside Cathy's own channel, so they are not independent, and no first-hand scam report surfaced on a logged-in Reddit sweep.

Bottom line: No scam pattern found and orders do arrive, but the missing batch numbers and crypto-only payment are real gaps, and the praise in Cathy's own channel is not independent. Likely not a scam, use caution.

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