Unrealistic pricing is the first tell
Retatrutide is a complex peptide to manufacture, and legitimate lab-tested product has a real production cost behind it. A listing priced dramatically below every comparable UK supplier is either misrepresenting the product’s purity, the batch’s actual content, or both.
Comparing prices meaningfully
Prices vary by vial size and by how the supplier handles testing and shipping costs, so a fair comparison looks at price per mg across a few established UK suppliers rather than judging one number in isolation.
Documentation gaps
A listing with no certificate of analysis, or one where the “COA” is clearly a stock image rather than a document tied to a specific batch, is a strong signal the seller either doesn’t test their product or doesn’t want the buyer checking closely.
Vague or copied product descriptions
Product descriptions copied word-for-word from other sites, with no batch-specific detail, storage instructions, or handling information, suggest a reseller with little direct knowledge of what they’re actually shipping.
Contact and reputation signals
No way to reach the supplier before ordering, no verifiable business presence, and reviews that appear only on the seller’s own site rather than anywhere independent are all reasons for caution. None of these alone proves a listing is fake, but a listing showing several of them at once is worth avoiding regardless of price.