Hang Sciences has no storefront of its own; it is one vendor inside the Peptaura marketplace, where the only ratings are the 27 the platform hosts and payment is crypto.

A research-peptide vendor sold through peptaura.com, currently marked temporarily unavailable.

Where it trips our checks

• Independent feedback: the 27 reviews and 4.7 rating are Peptaura's own on-platform figures; a logged-in Reddit sweep and a glp1forum check found no first-hand buyer accounts naming Hang Sciences. Ratings that exist only on the store selling the product are a pattern we see repeatedly in bad actors.
• Irreversible payment: Peptaura checkout runs on crypto, and buyers report a browser-extension pay prompt, so a payment cannot be reversed.
• COA traceability: one COA is published for Hang Sciences, with no clear link to the batch a buyer receives.
• Contact transparency: no company name, address, or direct contact for Hang Sciences outside the marketplace listing.

Not seen: independent testing of a delivered Hang Sciences batch; the requester flagged "product quality" but gave no order detail.

Bottom line: No scam pattern found, but Hang Sciences is thinly documented and marketplace-bound; product quality cannot be verified without batch-linked independent testing.

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