Guides
Learn before you compare.
Evergreen, evidence-led explainers — written without protocols, dosing or recommendations to use.
- Guides
- 55
- Last Updated
- May 2026
Foundations
What Are Peptides?
A clear, plain-English overview of what peptides are, how they differ from proteins, and what the research is actually studying.
Read guideResearch Peptides vs Prescription Peptides
Where the line sits between research-use compounds and medically prescribed peptides — and why the distinction matters.
Read guideWhat Does 'Research Use Only' Mean?
The legal and practical meaning of the 'research use only' label that appears on most peptide vials.
Read guidePeptide vs Protein: What's the Difference?
Understanding the structural and functional differences between peptides and proteins — and why the distinction matters for research.
Read guideHow Are Peptides Synthesised?
An overview of solid-phase and liquid-phase peptide synthesis methods used by suppliers and research labs.
Read guideNatural vs Synthetic Peptides
The sources and production methods that distinguish naturally occurring peptides from lab-synthesised ones.
Read guidePeptide Stability and Storage
How to interpret stability data and store peptides to preserve their integrity over time.
Read guidePeptide Classifications Explained
Common classification schemes used to organise peptides by source, structure, and function in research literature.
Read guideMetabolic Peptides: A Research Overview
An overview of peptides studied in research for their effects on metabolic pathways and energy regulation.
Read guideRecovery Peptides: A Research Overview
An overview of peptides studied in research for their potential roles in tissue repair and recovery.
Read guideGrowth Hormone Peptides: A Research Overview
An overview of peptides studied in research for interactions with growth hormone pathways.
Read guideLongevity Peptides: A Research Overview
An overview of peptides studied in research for potential effects on ageing processes and lifespan.
Read guideSkin and Cosmetic Peptides: A Research Overview
An overview of peptides studied in research for topical effects on skin appearance and function.
Read guidePeptide Receptor Types Explained
An overview of the major receptor families that peptides interact with and how they differ functionally.
Read guideHow Research Peptides Are Tested
An overview of the typical research pipeline used to evaluate peptide safety, efficacy, and mechanisms of action.
Read guidePeptide Half-Life Explained
Understanding half-life and how it determines how long a peptide stays active in the body.
Read guideSubcutaneous vs Intramuscular Routes in Research
Understanding how injection routes affect peptide absorption, distribution, and duration of action in research contexts.
Read guideCosmetic Peptides: A Research Overview
An overview of peptides studied in research for potential effects on skin appearance and cosmetic properties.
Read guideNeuroprotective Peptides: A Research Overview
An overview of peptides studied in research for potential protective effects on nervous system function.
Read guidePeptide Stacks in Research Literature
An overview of how multiple peptides are combined in research and the evidence for synergistic effects.
Read guideQuality & suppliers
How to Read a Certificate of Analysis
What a real COA should contain, what to look for in HPLC and mass spec data, and how to spot a sloppy or misleading one.
Read guideWhat Is Third-Party Lab Testing?
Why testing at an independent lab matters more than testing at the supplier's own facility.
Read guidePeptide Supplier Red Flags
The signals we use to score supplier transparency: third-party testing, batch documentation, refund clarity and bias risk.
Read guideHow to Compare Peptide Suppliers
A structured framework for comparing peptide suppliers across transparency, lab testing, support, and bias risk.
Read guideHow to Evaluate Peptide Purity
Methods for assessing purity claims and understanding what HPLC and mass spec results actually tell you.
Read guideReading Mass Spectrometry Data
How to interpret mass spectrometry reports and understand what the data tells you about peptide identity.
Read guideEndotoxin Testing Explained
What endotoxins are, why they matter in peptide quality, and how to interpret endotoxin test results.
Read guideBatch Documentation Checklist
A checklist of what documentation should accompany every peptide batch for full transparency.
Read guideHow to Compare Peptide Suppliers Side by Side
A structured framework for evaluating and comparing multiple peptide suppliers against consistent criteria.
Read guideInternational vs Domestic Peptide Suppliers
Trade-offs between sourcing peptides domestically and internationally — cost, convenience, regulatory compliance.
Read guidePeptide Suppliers and Affiliate Disclosure
Understanding supplier relationships, affiliate incentives, and how to identify potential conflicts of interest.
Read guideHow to Spot a Fake Certificate of Analysis
Red flags that indicate a Certificate of Analysis may be fraudulent, forged, or not genuinely representative of a batch.
Read guideThird-Party Lab Accreditation Explained
Understanding what lab accreditation means and how to verify that a testing lab is legitimate and accredited.
Read guidecGMP Manufacturing Standards Explained
Understanding current Good Manufacturing Practice (cGMP) standards and what they mean for peptide production quality.
Read guidePeptide Supplier Shipping Considerations
Understanding how peptides are shipped, storage conditions during transit, and risks of degradation during delivery.
Read guidePeptide Supplier Customer Support Standards
What to expect from reliable supplier customer support and how to assess responsiveness and technical knowledge.
Read guideEvaluating Supplier Bias and Affiliates
Understanding financial incentives in supplier relationships and how to identify and account for potential bias.
Read guideSafety & regulation
Are Peptides Legal in Australia?
A non-legal-advice overview of how peptides are classified in Australia and what the TGA framework looks like at a glance.
Read guidePeptide Safety: Risks and Red Flags
How to evaluate safety claims, what side-effect signals appear in the literature, and when the right answer is to talk to a doctor.
Read guideHow to Evaluate a Peptide Safety Claim
A framework for critically assessing claims about peptide safety and identifying evidence-backed statements.
Read guideResearch Context vs Human Use
Understanding the critical boundary between research findings and evidence of human safety or efficacy.
Read guidePeptide Contamination: What the Risks Are
Types of contamination that can occur in peptide manufacturing and what risks they pose.
Read guideHow Peptide Interactions Are Studied
How researchers investigate potential interactions between peptides and other compounds.
Read guidePeptides and the TGA: An Overview
How the Australian Therapeutic Goods Administration regulates peptides, and what the regulatory pathways are.
Read guidePeptides and the Australian Poisons Standard
How peptides are classified in the Poisons Standard and what scheduling means for supply and access.
Read guidePeptide Research and Mental Health Considerations
An overview of how peptide research examines effects on mood, anxiety, cognition, and other mental health parameters.
Read guidePeptide Research and Cardiovascular Health
An overview of how peptides are studied for effects on cardiovascular function and potential cardiac risks.
Read guidePeptide Research and the Hormonal Axis
An overview of how research peptides interact with hormonal systems and potential consequences of disrupting hormonal balance.
Read guideThe TGA Special Access Pathway
Understanding how the TGA Special Access Scheme allows qualified doctors to access unapproved peptides under defined circumstances.
Read guideAustralian Pharmacies and Peptide Compounding
Understanding the role of Australian compounding pharmacies in peptide preparation and the regulatory framework.
Read guideMethodology
How Peptide Reviews Are Scored
Our 4-step verification process and the five scoring criteria that drive every Peptide Reviews score.
Read guideHow We Score Evidence Quality
Peptide Reviews' methodology for assessing the quality and reliability of research evidence.
Read guideHow We Score Supplier Transparency
Peptide Reviews' framework for evaluating supplier transparency and trustworthiness.
Read guideHow We Score Effectiveness
Peptide Reviews' framework for assessing the strength of evidence for peptide effectiveness.
Read guideHow We Score Safety Clarity
Peptide Reviews' framework for assessing safety information transparency and completeness.
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