Editorial
Blog
Buyer-education guides, vendor-closure explainers, and plain-language context on COAs and research-compound regulation — written by the Best Peptide Stores Editorial Team from public sources, not vendor-supplied copy.
How to Read a Peptide COA (Certificate of Analysis)
What a real peptide COA actually shows, what counts as genuine third-party testing, and how to verify a Janoshik report on their public portal.
Peptide Sciences Shut Down: A Timeline of What Happened
A factual timeline of Peptide Sciences' March 2026 closure, the enforcement pressure that preceded it, and where researchers have migrated since.
The 2025-2026 Peptide Vendor Closure Wave, Explained
Peptide Sciences, Science.bio, Amino Asylum, and Paradigm Peptides all exited within two years. What happened at each, and why due diligence now matters.
Peptide Vendor Red Flags: A Due-Diligence Checklist
Recurring warning signs across closed peptide vendors: in-house-only COAs, below-market pricing, astroturfed reviews, reused lot numbers.
GLP-1 Research Compound Regulatory Tracker (2025-2026)
A regulatory roundup of FDA compounding restrictions on semaglutide and tirzepatide, retatrutide's Phase 3 status, and active state-level enforcement.
How We Score Peptide Vendors: The Rubric, Explained
Behind the scenes of our 6-factor vendor rubric, how it's weighted, why we don't test products ourselves, and how often scores get re-reviewed.
RSS feed · Related: full vendor rankings · methodology