semaglutide immunoassay fda cleared assay detection Cell-Based Assays for G Protein-Coupled Receptors (GPCRs) FDA crackdown on off-brand Ozempic

In December 2024, the FDA issued warning letters to several companies selling peptide products online, citing compounds such as retatrutide along with semaglutide and tirzepatide being marketed under research use only disclaimers while appearing to target consumers seeking weight-loss or performance benefits

But the likelihood rises in two groups

Liraglutide (Saxenda): Liraglutide was initially approved as Victoza for treating type 2 diabetes

Research Applications May Include : Synergistic stimulation of natural GH release Studies on recovery, lean mass, and anti-aging Exploration of GH/GHRH/GHRP axis functionality Follistatin-344 (1mg) Follistatin-344 Peptide 1mg (Lyophilized Peptide) For Research Use Only Follistatin-344 is a naturally occurring glycoprotein studied for its role in regulating myostatin activity and muscle cell development pathways

Was the FDA position final on 22 July 2026

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