Are peptides legal? FDA's own lists, peptide by peptide
Are peptides legal? The answer is in FDA documents. We read the category 2 list and the July 2026 advisory agenda and tabled each peptide's status.
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How to verify a peptide COA is real, and what it leaves open
Four checks the category uses to verify a peptide COA, set against the two conditions 21 CFR 211.84(d)(2) puts on relying on a supplier's analysis.
What MS confirms on a peptide COA that HPLC purity cannot
MS on a peptide COA confirms the observed mass matches the intended molecule. HPLC purity is a peak-area share; it proves neither identity nor mass.
Does 99% purity on a peptide COA mean 99% peptide by weight?
No. HPLC purity is a peak-area fraction; net peptide content is a mass fraction. Six sequences show what a TFA counterion alone can take from a 10 mg vial.
Smithers enters peptide testing by buying ACS Laboratory
A testing group founded in 1925 has bought the Florida lab now trading as ACS Peptide Testing Labs. The release is worth reading for what it does not name.
A 70-month sentence puts forged laboratory certificates on the record
The operator of a research-chemical seller was sentenced in late July after admitting the business forged laboratory certificates. For a market that runs on seller-hosted PDFs, that admission is the part worth reading.
The word 'peptide' is now doing two jobs on a label
Three August supplement launches print 'peptide' on the front of the container. The paperwork behind that word is a different kind of document from the one a research-supply buyer reads.
Cold-chain claims outrun cold-chain evidence in peptide shipping
Suppliers increasingly advertise temperature-controlled shipping. Far fewer publish anything that would let a buyer verify the chain held.
Third-party assay reports become a competition point in research supply
Vendors of research peptides spent years competing on price per milligram. A growing number now compete on whose laboratory signed the report.
