Peptide Research Library
Research references for peptide labs
Plain-language guides to research-use-only rules, Certificates of Analysis, supplier checks, storage and lab methods, plus free planners and checklists.
For Research Use Only. Not for human or veterinary use.
Browse by topic
- RUO & ComplianceUnderstanding research-use-only designation and compliance.3 articles
- Quality & DocumentationCOA management, lot tracking, and supplier vetting.7 articles
- Research DomainsDomain-specific research guides for peptides.9 articles
- Methods & Lab PracticesStorage, handling, and experimental design practices.2 articles
- Supplier Tools & GuidesDownloadable checklists and evaluation frameworks.Checklists and templates
Start here
New to research peptides? Read these three first.
Understanding Research-Use-Only (RUO) Peptides in 2026
Complete guide to RUO peptides: regulatory definitions, compliance requirements, vendor selection, and documentation best practices for research laboratories.
How to Read a Peptide Certificate of Analysis (COA)
Learn to read a peptide COA correctly: verify lot numbers, confirm identity via mass spec, check HPLC purity against thresholds, and spot documentation gaps that signal an incomplete or unreliable certificate.
How to Vet Research Peptide Suppliers: A 7-Point Checklist
Systematic 7-point checklist for evaluating RUO peptide suppliers: COA quality, lot tracking, compliance, technical support, and reliability assessment.
More from the library
All 22 articlesEndotoxin Testing for Research Peptides: LAL, rFC and COA Results
A peptide can pass HPLC and mass spectrometry and still carry bacterial endotoxin that skews cell-based results. This guide explains LAL and rFC testing, their limits, and how to read the endotoxin line on a COA.
MOTS-c Research: Mitochondrial-Derived Peptide Signaling and AMPK
MOTS-c is a 16-amino-acid peptide encoded in mitochondrial DNA. This review covers its published mechanisms, from AICAR-AMPK signaling to mitonuclear gene regulation, and what labs should document when studying it.
Peptide Stability Testing Protocol
How peptides degrade and how to design a lab stability study, from storage conditions to stability-indicating methods.
Batch Consistency in Peptide Quality
Why peptide lots differ, what to compare between batches, and how lot and serial tracking keep research reproducible.
GMP vs Research Grade Peptides: What's the Difference?
What GMP really means, what "research grade" should include, and how to spot supplier claims that do not hold up.
Bioregulator Peptides: Epitalon and Thymalin Research
What peptide bioregulators are, what the Epitalon and Thymalin research shows, and how to read it critically.
Compare peptides
Side-by-side research comparisons with sources.
- BPC-157 vs TB-500BPC-157 and TB-500 compared: structure, identity data and regulatory status. Research Use Only.
- CJC-1295 vs CJC-1295 no DACCJC-1295 and CJC-1295 no DAC compared: structure, identity data and regulatory status. Research Use Only.
- Epithalon vs PinealonEpitalon and Pinealon compared: structure, identity data and regulatory status. Research Use Only.
- GHK-Cu forms: copper complex vs free GHKGHK-Cu and free GHK compared: sequence, formula, molecular weight and PubChem identity, and what to check on a COA. Research Use Only.
- Ipamorelin vs Sermorelin vs HexarelinIpamorelin, Sermorelin, Hexarelin compared: structure, identity data and regulatory status. Research Use Only.
- MOTS-c vs 5-Amino-1MQMOTS-c and 5-Amino-1MQ compared: structure, identity data and regulatory status. Research Use Only.
- Semax vs SelankSemax and Selank compared: structure, identity data and regulatory status. Research Use Only.
Quality and testing
How lots are tested, documented and verified.
- How to read an Ageless Peptides COAA field-by-field guide to reading a peptide Certificate of Analysis: lot number, HPLC purity, mass-spectrometry identity, test dates and laboratory details.
- How to verify your lotEvery Ageless Peptides vial has its own serial number, linked to the lot it came from. How to open that lot's Certificate of Analysis and check it.
- HPLC vs mass spectrometryWhat HPLC purity and mass-spectrometry identity each tell you about a research peptide lot, and why a reliable COA reports both.
- Lyophilized peptide storageWhere Ageless Peptides publishes storage conditions for each product, and what sealed lyophilized vials list. Research Use Only.
- Research peptide supplier QA checklistA checklist laboratories can use to evaluate a research peptide supplier: lot-level COAs, identity testing, traceability, storage, documentation.
- What RUO meansWhat the Research Use Only (RUO) designation means for Ageless Peptides products, who may purchase them, and the uses that are prohibited.
Research tools
Free planners, checklists and templates.
- COA Reader GuideGuideCheck a Certificate of Analysis section by section with an interactive checklist.
- Storage Conditions LookupLookupSee the listed storage conditions for any Ageless product and strength, plus a record checklist.
- Supplier QA ChecklistChecklistScore a supplier across eight quality sections with live totals.
- Documentation TemplatesTemplatesDownload templates for inventory, experiment logs and COA filing.
Peptide Research Library FAQs
Common questions about peptide science, testing methods and research-use-only rules.
Every lot has its own COA
Browse research compounds, or look up the Certificate of Analysis for a lot in the COA Library.
