Articles
Concepts that come up repeatedly when reading peptide literature: what the terms mean, what analytical results support, and where the boundary sits between a finding and a conclusion.
Terminology · Biochemistry
A peptide is a short chain of amino acids. That simple definition hides most of what actually matters — where the boundary with proteins sits, why sequence is not the whole story, and why two vials labelled with the same name are not necessarily the same substance.
6 minute read · reviewed 17 August 2026
Evidence · Study design
Most published findings about peptides come from cells and animals. Very few come from adequately powered human trials. The distance between those two positions is not a detail — it is the single most useful thing to hold in mind when reading about any compound.
7 minute read · reviewed 17 August 2026
Laboratory standards · Quality
A certificate of analysis records what specific tests found in a specific batch on a specific date. It is a useful document and a frequently misread one. Most of the questions people bring to a certificate are not questions it answers.
6 minute read · reviewed 17 August 2026
Laboratory standards · Analytical chemistry
A purity figure is the answer to a narrow technical question. Read as a general quality score it is misleading, and the gap between the two readings is where most confusion about peptide quality lives.
6 minute read · reviewed 17 August 2026
In preparation
These are drafted or under review and have no page yet. They are listed so the shape of the section is visible, not to imply that anything has been published.
How to read a peptide research paper
A practical order of reading — methods before results, figures before abstract — and the specific things to check in peptide work.
Understanding HPLC and mass-spectrometry reports
How to read a chromatogram and a mass spectrum, and what each one can establish on its own.
Why batch traceability matters
Traceability is what connects a document to a container. Without it, analytical results describe an abstraction.
How temperature and light affect peptide stability
The degradation routes that matter for peptides, and how stability is actually studied rather than assumed.
Licensed, unlicensed and experimental compounds in the UK
What each classification means in UK law, and why the distinctions are not interchangeable.
Why “research use only” is not a substitute for regulatory classification
A supplier label is a statement of intent by the seller. It does not determine how a substance is classified in law.