COAs & Testing — Peptide Research Library
How a certificate of analysis is produced and how to read one: HPLC purity against measured content, the identity check by mass spectrometry, what a real Janoshik Analytical report contains, how to verify it on the lab’s own portal, and the tells that separate a real certificate from a decorative one. Worked examples use live Eppix Labs lots.
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Compound Guides
Literature overview, sequence, molecular weight, storage and reconstitution for each peptide.
21 articles - Pillar 03
Buying Peptides in Canada
Where to buy, what to check, shipping across Canada, payment, storage on arrival.
3 articles - Pillar 04
Regulation & Compliance
Health Canada and FDA positions, research-use-only status, current primary-source reading.
4 articles - Pillar 05
Comparisons & Lab Practice
Compound-vs-compound comparisons, reconstitution math, aliquoting, cold-chain handling.
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12 articles
Verification & Testing
9- Verification GuideCOAs & Testing
Purity vs Fill Accuracy: Why One Number Is Not Enough
Two independent measurements, and why suppliers publish only the first
- VerificationCOAs & Testing
How to Verify a Peptide COA in Three Steps
A certificate is only worth what its verification path is worth, and most of the market has no verification path at all
- VerificationCOAs & Testing
How to Spot a Fake Peptide COA: Seven Red Flags
Most bad certificates are not forgeries. They are real documents used to say something they do not say.
- Verification GuideCOAs & Testing
How to Read a Certificate of Analysis
What each figure on a peptide COA proves — and what it does not
- VerificationCOAs & Testing
Janoshik Testing Explained: How Every Eppix Batch Is Verified
What the laboratory measures, what its certificates report, and how to check any of ours on its database in two minutes
- VerificationCOAs & Testing
What Is HPLC Testing, and What Can It Not Tell You?
Every peptide supplier in Canada cites HPLC and almost none explain it, because an explained number is a checkable number. Here is what the test measures and where its two blind spots are
- VerificationCOAs & Testing
Mass Spectrometry: The Test That Proves What Is Actually in the Vial
HPLC tells you a sample is pure. Mass spectrometry tells you what it is pure of, which in a market where substitution is the profitable fraud is the more load-bearing question
- VerificationCOAs & Testing
Underfilled Vials: The Market's Quietest Fraud
Adulterated peptides make headlines. Underfilled ones make margins. Selling six milligrams in a ten-milligram vial is invisible to the eye, invisible to purity testing, and across thousands of vials the most profitable dishonesty available
- VerificationCOAs & Testing
Why We Publish Every Certificate Before You Buy
Most suppliers treat a certificate as customer service, produced when asked. Publishing before the sale is a different thing entirely, and the difference is structural rather than cosmetic
Method & Reference
2- ReferenceLab PracticeCOAs & Testing
Peptide Molecular Weight: The Number That Anchors Every Verification
Of all the figures on a product page, molar mass looks the most decorative and is the most load-bearing: it is what makes identity testing possible and what lets you audit a certificate yourself
- ReferenceLab PracticeCOAs & Testing
The Peptide Research Glossary, A to Z
Every term that actually appears on a certificate, a product page or in the literature, defined in plain language, with links where a term has its own guide
Buying & Shipping
1How These Articles Are Written
- 01Numbered inline citations tied to a References section with PMIDs or DOIs.
- 02A real batch-COA table where a compound is discussed — lot, HPLC purity, measured vs labelled content.
- 03Named human author with a public bio; published and updated dates shown.
- 04Regulatory statements link to the primary source and are dated.
- 05All content is for in vitro and laboratory research reference only. No dosing or administration guidance.
Editorial Team
Adam Reeves — Research Editor
Compiles compound overviews and COA methodology from peer-reviewed literature and Janoshik reports. Bio, credentials and contact on the author page.
All articles by Adam →New articles and batch results, weekly
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All products are supplied for in vitro and laboratory research purposes only.