Learn, question, verify
Peptide research guides
Understand the evidence behind research terminology—not just the headline. These guides explain how to read laboratory documentation and why experimental findings are not the same as proven clinical benefits.
Understand peptide terminology and laboratory reports
Start with the question you want to answer. The basics guide explains the molecular terms; the COA guide deals with a named sample and its test results; the evidence guide explains how to assess a research claim. These are different questions, so a laboratory purity result cannot stand in for clinical evidence.
Certificates of Analysis
View supplied third-party laboratory reports, measured results and verification references by product.
View the COAs →FoundationsWhat are peptides?
A plain-English introduction to amino-acid chains, proteins and research terminology.
Read the guide →Laboratory documentationHow to read a certificate of analysis
Batch numbers, methods, results and the limits of a purity claim.
Read the guide →Analytical scienceHPLC, LC–MS and analytical testing
What common laboratory methods can indicate—and what they cannot establish alone.
Read the guide →Laboratory documentationPurity, identity, content and sterility
Why each is a separate analytical question—and why a single percentage cannot answer all of them.
Read the guide →Scientific literacyUnderstanding peptide research evidence
Laboratory studies, clinical trials and questions to ask before accepting a claim.
Read the guide →Drug developmentClinical-trial phases explained
How Phase 1, 2, 3 and post-authorisation research answer different questions.
Read the guide →ReferencePeptide research glossary
Clear definitions for commonly encountered laboratory and evidence terms.
Read the guide →Common questionsPeptide research questions answered
Purity versus quantity, batch-specific reports, clinical trials and what a research label can establish.
Read the answersAbout the guidesSources and editorial approach
How the guides are prepared, which sources they use and where their limitations lie.
Read the editorial policyResearch guides by peptide name
Looking for Retatrutide, Tirzepatide, GHK-Cu or another compound? Each guide separates its identity, research mechanism, evidence levels and limitations. Open the named guide for its sources, questions and any linked laboratory documents.
Retatrutide research guide
An investigational triple-receptor agonist being studied for obesity and metabolic disease.
Read the evidence and limitations →Compound researchTirzepatide research guide
A dual GIP and GLP-1 receptor agonist with authorised prescription uses and extensive clinical evidence.
Read the evidence and limitations →Compound researchGHK-Cu research guide
A naturally occurring copper-binding tripeptide studied in skin, matrix and wound biology.
Read the evidence and limitations →Compound researchBPC-157 + TB-500 research guide
Two distinct experimental materials commonly grouped together in preclinical repair research.
Read the evidence and limitations →Compound researchMOTS-C research guide
A mitochondria-derived peptide studied as a signal linking cellular stress and energy metabolism.
Read the evidence and limitations →Compound researchKPV research guide
A three-amino-acid alpha-MSH fragment investigated in inflammatory and barrier models.
Read the evidence and limitations →Compound researchEpitalon research guide
A synthetic tetrapeptide discussed in cellular-ageing research, with limited clinical evidence.
Read the evidence and limitations →Compound researchSemax research guide
An ACTH-derived synthetic peptide investigated in neurological and stress-response research.
Read the evidence and limitations →Compound researchSelank research guide
A tuftsin-derived synthetic peptide investigated in stress, anxiety and neuroimmune research.
Read the evidence and limitations →Compound researchIGF-1 LR3 research guide
A modified IGF-1 analogue used to investigate growth-factor signalling in experimental systems.
Read the evidence and limitations →From a product name to supporting evidence
A catalogue listing describes a supplied format; a research guide explains the compound; a certificate records tests on a particular submitted sample. Keep those three references separate. For example, the Retatrutide catalogue profile lists formats, while the Retatrutide research guide discusses the evidence. Use the same distinction for the Tirzepatide catalogue profile and Tirzepatide research guide.
To check a document, open the COA report library, then use the certificate-reading checklist to compare the sample name, batch information, tests and measured results.
What these guides do—and do not—provide
They are introductions to reading scientific information. They do not provide treatment recommendations, dosing instructions, personal medical advice or proof that a particular catalogue item has been independently tested.