Thistle BioLabs Journal

Peptide Identity Testing: HPLC vs Mass Spectrometry Explained
A research-only guide to what HPLC and mass spectrometry can — and cannot — tell you about peptide identity, purity and laboratory material quality. Read article
Amycretin / Zenagamtide Explained: GLP-1 + Amylin Research in 2026
Emerging research update on zenagamtide (amycretin), a dual GLP-1/amylin agonist. Thistle BioLabs does not currently stock this material; this article is provided for research context only. Read article
Cagrilintide Research in 2026: Amylin Signalling, CagriSema & REIMAGINE
A research-only 2026 overview of cagrilintide, amylin-receptor signalling and the growing Phase 3 evidence around CagriSema and the REIMAGINE programme. Read article
Retatrutide Research in 2026: Phase 3 Developments & Triple-Agonist Science
A current research-only overview of retatrutide’s triple-receptor design, 2026 Phase 3 programme and what the latest trial milestones mean for metabolic peptide research. Read article
Why peptide certificates of analysis matter – Thistle BioLabs Journal
Why COAs Matter When Buying Research Peptides Online
A clear guide to batch-specific certificates of analysis, including what HPLC and mass spectrometry can indicate—and the limits of those results. Read article
UK research peptide supplier checklist – Thistle BioLabs Journal
UK Peptide Supplier Checklist: What to Look For Before Ordering
A practical checklist for evaluating a UK research-material supplier, covering labelling, traceability, analytical evidence, storage and responsible claims. Read article
Tissue signalling peptide research guide – Thistle BioLabs Journal
Tissue Signalling Peptides: What Researchers Are Looking At
An evidence-led introduction to peptide-signalling research, including receptor studies, assay design, controls and the importance of model context. Read article
Nootropic peptide research overview – Thistle BioLabs Journal
Nootropic Peptides: A Simple Research-Only Overview
A careful explanation of the informal “nootropic peptide” label and how neuropeptide signalling can be investigated in controlled laboratory models. Read article
GLP-1 research peptide overview – Thistle BioLabs Journal
GLP-1 Research Peptides: Why They’re Popular in Modern Research
A laboratory-focused introduction to GLP-1 receptor research, model selection and the essential distinction between research materials and licensed medicines. Read article
Lyophilised research peptides explained – Thistle BioLabs Journal
Lyophilised Peptides Explained: What the Powder Form Means
How lyophilisation removes water, what cake appearance can and cannot reveal, and why storage requirements remain material- and batch-specific. Read article
Research peptide storage and handling guide – Thistle BioLabs Journal
Peptide Storage & Handling: How to Keep Research Products Stable
Practical principles for protecting sealed and prepared research peptide samples from moisture, heat, light, contamination and avoidable handling variation. Read article
Peptide purity testing explained – Thistle BioLabs Journal
What Does 99%+ Purity Mean in Research Peptides?
Why chromatographic purity is only one quality attribute, and why identity, method suitability, batch context and other tests still matter. Read article
How to read a peptide certificate of analysis – Thistle BioLabs Journal
How to Read a Peptide COA: Purity, Testing & What to Look For
A step-by-step guide to reviewing a peptide COA, from batch matching and methods to HPLC, mass spectrometry and the document’s limitations. Read article
What are research peptides – Thistle BioLabs Journal
What Are Research Peptides? A Simple Guide for UK Buyers
A clear introduction to peptide structure, synthesis and laboratory uses, with practical guidance on identity, handling and responsible procurement. Read article
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