How we read a storefront, written down
The same procedure we apply to every file, explained one document at a time so that a reader can repeat it without us. These pieces are about paperwork and companies; none of them is medical advice.
- Updated 2026-10-19
Fake COA Warning Signs: How Forged and Recycled Peptide Certificates Look
How forged or recycled peptide COAs look: reused report numbers, mismatched lots, no lab contact, image-only scans, stale dates, and how to check with the lab.
- Updated 2026-10-19
How to Verify a Peptide COA With the Lab: Step by Step
Step by step: verify a peptide COA with the issuing lab using the report number, lookup portals or email, read the confirmation, and act if no record exists.
- Updated 2026-10-19
Lookalike Domains and Clone Stores: How to Confirm You Are on the Real Peptide Supplier
How clone and lookalike peptide storefronts work (near-identical names, other TLDs, copied catalogs) and how to confirm the real domain via footer and registry.
- Updated 2026-10-19
Mass Spec vs HPLC on a Peptide COA: Identity, Purity and the Half-Answered Certificate
What HPLC and mass spectrometry each establish on a peptide COA: purity versus identity, what each cannot show, and why one method alone is half an answer.
- Updated 2026-10-19
Peptide Testing Labs Explained: What a Lab Name on a Certificate Tells You
Neutral explainer of the labs named on peptide supplier COAs (Janoshik, Vanguard, MZ Biolabs, Freedom Diagnostics, Ethos, Kovera): what a name proves.
- Updated 2026-10-19
Research Use Only Labeling Explained: What the RUO Disclaimer and Buyer Gate Are For
What research-use-only labeling is, what a supplier's RUO disclaimer and purchaser gate do, how we check them, and why health claims beside RUO are flagged.
- Updated 2026-10-19
Trustpilot Profile Removed: What the Notice Means for a Peptide Supplier
What Trustpilot's removal notice means for a peptide supplier, why 21 of 62 suppliers in our data set show it, and why we score it as a stated absence.
- Updated 2026-10-19
What an FDA Warning Letter Actually Says: Anatomy, Terms and How to Read One
Anatomy of an FDA warning letter to a peptide supplier: unapproved new drug, misbranded, the 15-day response window, heavy evidence but not a court finding.