Vendor Intelligence Report: Zen Peptides

Executive summary

Across 19 Finnrick lab tests, Zen Peptides has 12 passes and 7 failures, for a 63% overall pass rate. The signal is uneven rather than uniformly bad. GHK-Cu is the strongest tested lane, Retatrutide is mixed enough to require current batch-linked verification, and Tesamorelin is the product where the independent record argues most clearly against using this vendor. Under stricter grading, the weaker parts of the catalog lose comfort faster.

The identity file is more concerning than the headline score. Zen presents a Singapore contact surface, but the site’s own ownership language and Hong Kong records point to a Weili import/export entity and a Fengyun footer entity registered at the same unit. The listed Singapore address resolves to The Shoppes at Marina Bay Sands, while buyers are routed through a U.S. phone number, a personal Gmail address, and Telegram handles that overlap with sister brands.

The report also maps Zen into a Weili/Fengyun storefront cluster that includes TingPeptide, OuPeptide, Ptidebio, and Grey Market Peptide. That network would be less troubling if Zen published clean official-channel and anti-counterfeit rules. Instead, its COA page shows Janoshik reports with batch listed as Unknown, and the public reputation file includes non-delivery, fake-document, and doxxing allegations, with complaints naming Amanda while the official site points buyers toward Emily/@emilysong6. Some buyers do appear to receive product; the unresolved issue is whether a buyer can safely identify the seller, verify the batch, and recover if a transaction goes wrong.

Inside the full report:

• Finnrick pass/fail rates, rating trajectories, and methodology-divergence charts for all 3 tested products.
• Hong Kong Weili and Fengyun registry evidence, including the rename and domain-update timeline.
• Claimed Singapore address analysis versus the Hong Kong registered office, U.S. phone, Gmail, and hosting trail.
• Sister-storefront mapping for TingPeptide, OuPeptide, Ptidebio, and Grey Market Peptide.
• COA integrity review of Janoshik captures with the Unknown-batch defect.
• Reddit and Trustpilot reputation file covering non-delivery, fake-document, and doxxing allegations.

Risk assessment

• Business-identity misrepresentation risk — high: Zen lists a Singapore Marina Bay Sands mall address while site and registry records tie the operation to Hong Kong Weili/Weili Import & Export at a Kwun Tong industrial address.
• COA and document-traceability risk — high: Vendor-posted Janoshik COAs list batch as Unknown, preventing linkage to shipped product; Reddit reports also allege doctored Zen COAs.
• Fulfillment and payment-loss risk — high: Multiple Reddit reports from Dec 2025-May 2026 allege non-delivery or blocking involving Amanda/Zen; reported payment channels are non-reversible.
• Customer-privacy and retaliation risk — high: A buyer report alleges the operator doxxed them after a negative review; checkout data includes sensitive identity and shipping information.
• Tesamorelin quality risk — high: Finnrick Tesamorelin testing is fail-heavy: 6 tests, 2 pass / 4 fail, 41.34% rating.
• Retatrutide batch-reliability risk — medium: Finnrick Retatrutide record is mixed rather than clean: 9 tests, 6 pass / 3 fail, 74.87% rating; batch-specific verification is needed.
• Channel-authentication and brand-confusion risk — medium: Zen shares Weili-linked storefronts and a Telegram channel branded @OupeptideXue, while reports name Amanda/sn5984; no authoritative official-channel or anti-counterfeit list surfaced.