Endotoxins, Mismatched Batches, and Vials That Don’t Match Their Labels: A Real Guide to Peptide Quality Testing
Purity percentage gets all the attention on a peptide Certificate of Analysis. It’s the number vendors put in bold, the
Lab Education
Lab math, safety, sourcing education, and research methodology for the DIY research community.
Lab Education, Peptide Research
Fake Ozempic Is Already in the Supply Chain — Here’s How to Spot Counterfeit GLP-1s Before They Spot You
Counterfeit semaglutide and tirzepatide have shown up in the legitimate U.S. drug supply chain, in some cases laced with unapproved substances. Here’s exactly what to check before you trust a dose.
Lab Education, Research News
Your Compounded GLP-1 Just Got Riskier: A Patient Action Plan for the 2026 FDA Crackdown
If you’re on compounded semaglutide or tirzepatide, the regulatory ground is shifting under you. Here’s a concrete checklist for what to actually verify and ask before your next refill.
Fake COAs, No-Show Packages, and Vials With Nothing In Them: What the Peptide Community Is Actually Reporting About Scams
Search “peptide scam” on Reddit and you won’t find a single dramatic story. You’ll find dozens of small, tired, almost
FDA’s Peptide Crackdown Keeps Growing: Inside the 2026 Warning Letter Wave
Since November 2025, the FDA has sent over 50 warning letters to online peptide sellers in three coordinated waves. Here’s what the agency is actually targeting, using real letters as case studies.
BPC-157’s Long Road Back: Where the FDA Bulk Drug List Process Actually Stands
BPC-157 just cleared a real hurdle — a favorable PCAC committee vote toward FDA’s 503A Bulk Drugs List — but it’s still not formally authorized for compounding. Here’s the full regulatory timeline and what’s still ahead.
The FDA Is Closing the Door on Bulk-Compounded GLP-1s — Here’s Where That Stands
The FDA’s proposal to exclude semaglutide, tirzepatide, and liraglutide from the 503B bulks list just finished its comment period. Here’s what changes, what doesn’t, and why the shortage-era compounding market is ending.
Lab Education, Peptide Research
How to Read a GLP-1 Clinical Trial Like a Scientist (Without a Science Degree)
Every GLP-1 headline throws around a weight-loss percentage. Here’s how to actually read the trial behind it — phases, placebo adjustment, endpoints, and the tricks press releases use to make numbers look bigger than they are.
Lab Education, Peptide Research
Peptide Research 101: A 2026 Beginner’s Orientation to a Fast-Moving Field
New to research peptides in 2026? Start here — a practical orientation covering what research peptides actually are, the current legal landscape, how to evaluate vendors, and where to go next.
Peptide Side Effects: What the Research Shows and What’s Anecdotal
Side effect profiles for research peptides range from well-characterized to purely anecdotal. Here’s a research-graded breakdown of what’s actually documented vs what comes from community reports.