How to Read an HPLC Chromatogram: A Peptide Buyer’s Guide
How to read an HPLC chromatogram: retention time, peak area, baseline and purity, what impurity peaks usually mean, and red flags on a peptide COA.
Archive
Category: Testing & Quality
How research peptides are made, tested and verified: HPLC, mass spectrometry, certificates of analysis, net peptide content, stability, endotoxin and how to read a study.
Clinical Trial Phases Explained: From Phase 0 to Phase IV
Clinical trial phases explained: what each phase tests, how often drugs pass each stage, how Canada authorizes trials, and what it means for peptides.
How to Read a Peptide Study: Cell, Animal and Human Evidence Explained
How to read peptide research: what cell, animal and human studies can and can't show, why mouse results often fail in people, how to read a paper, and red flags in peptide claims.
How to Read a Peptide Mass Spectrum: Charge States, Isotopes and Adducts
How to read a peptide mass spectrum: what m/z means, why one peptide shows several peaks, isotope spacing, deconvolution, adducts, and what mass spec can't tell you.
What Does Lyophilized Mean? Freeze-Drying Peptides Explained
What does lyophilized mean? Freeze-drying explained: how lyophilization works, why research peptides ship as dry powder, and how to store it.
How Peptides Degrade: A Guide to Peptide Stability
Peptide stability explained: oxidation, deamidation, aspartimide formation, hydrolysis and aggregation, the riskiest sequences, and how storage helps.
Endotoxin in Research Peptides: What It Is and Why It Matters
Endotoxin explained for peptide researchers: what LPS is, why trace amounts skew immune and inflammation assays, how LAL testing works, and the controls labs use.
How Research Peptides Are Made: Solid-Phase Peptide Synthesis Explained
How research peptides are made: solid-phase peptide synthesis step by step, why errors compound with length, where impurities come from, and what a COA can catch.
How to Spot Fake or Underdosed Research Peptides
How to spot fake or underdosed research peptides in Canada: the five failure modes, COA red flags, how to verify a lab report and what to ask.
Net Peptide Content and TFA vs Acetate Salts, Explained
Why a 10 mg peptide vial isn't 10 mg of peptide: net peptide content, TFA vs acetate counter-ions, how they're measured and when they matter in the lab.