SPX LABS • RESEARCH & ANALYTICAL EDUCATION
Peptide Research Library
Independent educational resources covering peptide analytical testing, HPLC purity, LC-MS, batch traceability and the scientific background of research compounds.
The SPX Labs Peptide Research Library is designed to help researchers understand both the scientific literature surrounding research peptides and the analytical evidence used to evaluate individual research-material batches.
Scientific Literature ≠ Batch Analytical Evidence
Scientific papers can explain what a compound is and what researchers have investigated. They do not establish the identity, purity or content of a commercial research-material batch. Laboratory reports provide analytical information about the sample tested, but do not prove every biological claim made about the compound.
SPX Labs keeps these two forms of evidence separate.
Peptide Testing & Analytical Guides
Start here to understand peptide COAs, purity results, analytical methods and batch-specific documentation.
ANALYTICAL GUIDE
How to Read a Peptide COA
Understand peptide identity, HPLC purity, quantitative content, LC-MS and the information a Certificate of Analysis can — and cannot — establish.
ANALYTICAL GUIDE
HPLC vs LC-MS
Learn how chromatography and mass spectrometry answer different analytical questions when evaluating peptide research materials.
PURITY GUIDE
What Does 99% Peptide Purity Mean?
Why 99% HPLC purity does not necessarily mean that 99% of the physical material in a vial by mass is the target peptide.
TRACEABILITY GUIDE
Why Peptide Batch Testing Matters
Learn why a laboratory result from one batch should not automatically be applied to unrelated or future research-material batches.
INDEPENDENT ANALYSIS
Third-Party Peptide Testing: What It Actually Proves
Independent testing can provide valuable analytical evidence, but laboratory independence, sample provenance, batch traceability and analytical scope are separate questions. Learn how to evaluate the underlying evidence rather than relying on the words “third-party tested.”
Research Compound Overviews
Explore the chemistry, analytical considerations and published scientific background of individual research compounds.
RESEARCH OVERVIEW
BPC-157 Research
Explore the scientific background of the 15-residue peptide commonly known as BPC-157 together with peptide identity, purity and batch-testing considerations.
RESEARCH OVERVIEW
TB-500 Research
Examine TB-500 terminology, its relationship to thymosin beta-4 research and the importance of establishing the precise identity of a research material.
COPPER PEPTIDE
GHK-Cu Research
Learn about the GHK copper complex, copper coordination chemistry, analytical testing and the experimental literature surrounding this tripeptide complex.
MITOCHONDRIAL RESEARCH
MOTS-C Research
Explore mitochondrial-derived peptide research, cellular stress signalling, mitochondrial-to-nuclear communication and MOTS-c analytical testing.
GHRH RESEARCH
Tesamorelin Research
Explore GHRH receptor signalling, the GH–IGF-1 axis, established tesamorelin literature and the distinction between pharmaceutical research and batch analysis.
GHS-R RESEARCH
Ipamorelin Research
Understand growth hormone secretagogue signalling, the GHS-R pathway, early ipamorelin pharmacology and analytical testing considerations.
GHRH ANALOGUE RESEARCH
CJC-1295 No DAC Research
Understand the difference between CJC-1295 with DAC and non-DAC research materials, why albumin-binding research cannot automatically be transferred between them, and why analytical identity matters.
Latest Research Articles
SPX LABS • RESEARCH GUIDE
What Is KPV Peptide? Research, Half-Life & UK Availability
A plain-English guide to the KPV peptide: what it is, what early studies actually found, what is known about half-life and where UK laboratories can source it for research.
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What Does GHK-Cu Do? The Research Explained Without the Hype
What does GHK-Cu do? It is a copper-binding tripeptide studied mainly for how it influences skin-related cells, extracellular-matrix signalling and tissue-remodelling models. Here is what researchers actually measured—and where the evidence runs out.
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What Is NAD+? The Molecule Behind the Hype—and What Research Shows
NAD+ is a coenzyme found in every living cell. It is central to energy-transfer reactions and is heavily marketed in longevity culture. This guide separates the basic biology, the different NAD-related molecules and what human research has actually measured.
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What Is Bacteriostatic Water? Ingredients, Sterile Water & Labels
What is bacteriostatic water? In plain English: it is water with a preservative added. Here is what the label commonly says, how it differs from sterile water, and what the word ‘bacteriostatic’ does—and does not—tell you.
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What Are Peptides? A Plain-English Guide to the Science
What are peptides? They are short chains of amino acids—the same building blocks used to make proteins. The interesting part is how sequence, shape and study design determine what a peptide can, and cannot, tell researchers.
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Peptide Storage: Fridge or Freezer? What the Science Actually Says
Should research peptides be kept in the fridge or freezer? The useful answer starts with the material’s state: sealed lyophilised powder and a peptide in solution are different stability questions. Here is what storage science can say—and what only the product documentation can answer.
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Semaglutide Clinical Trials: SUSTAIN, STEP and What the Studies Found
Semaglutide has been investigated in large Phase III programmes. This evidence-led guide explains the SUSTAIN and STEP trials, their populations, main findings and the limits of applying trial data beyond the studies.
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CJC-1295 No DAC + Ipamorelin Studies: What Research Shows
CJC-1295 No DAC + Ipamorelin studies are often confused with research on the individual components. This guide explains the published evidence, key findings in plain English and the limits for the combination.
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Liraglutide Clinical Trials: The LEAD Programme and LEADER Study
Liraglutide has a substantial Phase III and cardiovascular-outcomes evidence base. This study-led guide explains the LEAD programme, the LEADER trial, what their results meant and where the evidence stops.
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Tirzepatide Clinical Trials: How the SURPASS Programme Was Designed
The SURPASS programme used Phase III clinical studies to investigate tirzepatide in defined type 2 diabetes populations. This guide explains the trial designs, endpoints, published results and evidence limits in plain English.
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Peptide Comparison UK: How to Compare Research Suppliers
Looking for a peptide comparison in the UK? This guide explains what can actually be checked before choosing a research-material supplier—and why SPX Labs is the only website named or recommended here.
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Peptides Craze: But What Does the Science Say?
What do peptide research studies actually show? This evidence-led guide examines published human and animal results behind SPX Labs catalogue materials, separating direct findings from early or indirect evidence.
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What Is Retatrutide? The Science, Trials and Legal Status
Retatrutide is Eli Lilly’s investigational triple hormone-receptor agonist. This evidence-led guide explains the GLP-1, GIP and glucagon targets, Phase I–III research, published and topline results, safety reporting, regulatory status and the public court record.
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NAD+ Research: Redox Biology, Cellular Energy and Study Limits
NAD+ is a core biochemical coenzyme rather than a peptide. This evidence-led guide explains why researchers measure NAD+/NADH, what different study models can show, and where the direct human evidence stops.
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Tesamorelin Clinical Trials: Phase III Studies and Research Evidence
Tesamorelin clinical trials include multicentre randomised Phase III studies and follow-up research. This evidence-led overview explains the populations, endpoints, trial designs and limits of those findings.
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What Are Peptides? A Beginner’s Guide to Peptide Science
Peptides are short chains of amino acids found throughout biology and widely studied in chemistry, biochemistry and laboratory research. This guide explains the fundamentals in plain English.
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How Are Peptides Made? A Guide to Peptide Synthesis
Peptide synthesis is the controlled process of joining amino acids in a defined sequence. This plain-English guide explains how laboratory peptides are assembled, purified and analytically documented.
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Peptides vs Proteins: What’s the Difference?
Peptides and proteins are both built from amino acids, but differences in chain length, folding, structure and biological context affect how scientists describe and study them.
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Understanding Peptide Molecular Weight and Amino-Acid Sequence
A research-focused guide to peptide sequence notation, molecular-weight calculations, terminal groups, modifications and the interpretation of mass-spectrometry results.
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How to Store Lyophilised Research Peptides: Temperature, Light, Moisture & Stability
A research-focused guide to the factors that influence peptide stability, including temperature, moisture, light, oxygen, packaging and storage records.
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What Are Research Peptides? A Laboratory Science Guide
An introduction to peptide structure, laboratory research and analytical evaluation.
Explore the guideFrom Research Literature to Batch Documentation
The Research Library explains the science. The SPX Labs analytical system provides a separate route for evaluating available batch-specific documentation.
COA Library
Browse available SPX Labs batch analytical records and review the results associated with documented research-material batches.
Quality & Testing
Learn how SPX Labs approaches analytical documentation, batch traceability and internal research-material release criteria.
Research Peptides UK
Explore the SPX Labs research-peptide range alongside available product information and batch documentation.
Research First. Verify the Batch.
Understanding a compound’s scientific background is only one part of research-material evaluation. Where analytical documentation is available, researchers should also examine the evidence associated with the specific batch.
Research & Analytical Information Only
The SPX Labs Research Library is provided for general laboratory, analytical and scientific education. Discussion of published experimental or clinical research describes the scientific literature and should not be interpreted as medical advice or as establishing therapeutic suitability of SPX Labs research materials. Products are supplied strictly for legitimate laboratory research, analytical testing and scientific evaluation and are not supplied for human or veterinary consumption or administration.
SPX Labs — Precision Research. Verified Quality.
