Working with research peptides
Reference articles written for laboratory researchers: what peptides are, how to store and reconstitute them, how to read the documentation that should come with them, and where the law stands in the United Kingdom.
What are research peptides?
A plain-language introduction to research peptides: what they are, how they are made, why laboratories use them, and what research-use-only means in practice.
Storing, handling and reconstituting lyophilised peptides
How to store lyophilised research peptides, bring a vial to room temperature, reconstitute without degrading the compound, and aliquot for repeat use.
Understanding a Certificate of Analysis
What a Certificate of Analysis for a research peptide contains, how to read purity and identity results, why independent testing matters, and the difference between purity and net peptide content.
Peptide purity and testing methods explained
How research peptides are tested: reverse-phase HPLC for purity, mass spectrometry for identity, amino acid analysis for net content, and what each method can and cannot tell you.
Reading a peptide specification: CAS, formula, sequence and molar weight
How to read the technical specification of a research peptide — CAS number, molecular formula, molar weight, sequence notation, terminal modifications and non-standard residues.
Batch numbers and traceability
Why every vial of a research peptide should carry a batch number, how batch-level traceability works, and how a QR code links a vial to its Certificate of Analysis.
Bacteriostatic water vs sterile water for reconstitution
The difference between bacteriostatic water and sterile water for reconstituting research peptides in the laboratory, when each is appropriate, and when the preservative can interfere.
Research peptides and UK law
The legal position of research peptides in the United Kingdom: the Human Medicines Regulations, the role of the MHRA, controlled-substance status, and what research-use-only does and does not permit.
How to choose a research peptide supplier
What to check before buying research peptides: independent testing, per-batch Certificates of Analysis, batch traceability, technical documentation, company transparency and honest research-use classification.
Retatrutide: what it is, and why we don't sell it
An unapproved investigational drug, not lawfully available to buy outside clinical trials. A straight answer to the questions people search for.
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