Semaglutide is a GLP-1 receptor agonist (MW ~4,113.6 Da), the molecule behind Ozempic and Wegovy. Extremely high demand makes it one of the most counterfeited research compounds — verified identity is the overriding sourcing concern.
Counterfeit Risk Is the Main Issue
Because semaglutide demand is enormous, mislabeled or underdosed vials are common. Require a third-party COA (HPLC and mass spectrometry) confirming ≥98% purity and the ~4,113.6 Da molecular weight for every batch — this is the primary defense against counterfeits.
What to Look for
US-based manufacturing with verifiable address, per-batch COAs, sealed lyophilized vials, and transparent sourcing. For a compound this widely faked, documentation is non-negotiable.
Typical Price Range
Research-grade semaglutide typically costs about $40–$80 per vial depending on strength. Unusually cheap vials are a strong counterfeit signal.
Red Flags to Avoid
Missing or generic COAs, MW that does not match ~4,113.6 Da, prices far below market, claims of pharmaceutical equivalence to Ozempic/Wegovy, and human-use claims.
Top Recommended Source
Purgo Labs is our top-rated source based on third-party COA verification, research-grade purity, and transparent manufacturing. View at Purgo Labs.