Research Peptide Guides
Science-led, plain-English guides to research peptides — written for laboratory professionals, academic researchers, and qualified scientists in the UK. All content is for research and laboratory purposes only.
What Are Research Peptides? A Plain-English Guide for 2026
A complete beginner guide to research peptides — what they are, how they work, and why labs across the UK study them.
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What Is a Certificate of Analysis (COA)? How to Read One
A COA proves your peptide purity. Learn what HPLC and mass spectrometry mean and how to read your certificate.
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How to Store Research Peptides: Temperature, Stability & Shelf Life
Storage temperature guide for research peptides — lyophilised and reconstituted forms, shelf life, and stability.
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How to Reconstitute Research Peptides: Step-by-Step Guide
Step-by-step guide to reconstituting lyophilised peptides — supplies needed, mixing technique, and storage after reconstitution.
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Are Research Peptides Legal in the UK? (2026 Complete Guide)
A clear breakdown of UK law on research peptides — MHRA guidance, legal status, and what research use only means.
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What Is BPC-157? Research, Mechanisms & Where to Buy in the UK
Complete guide to BPC-157 research — what it is, how it works, current studies, and how to source verified BPC-157 in the UK.
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What Is TB-500? Thymosin Beta-4 Research Guide 2026
TB-500 research guide — mechanism of action, current studies, and how to source verified TB-500 in the UK.
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BPC-157 vs TB-500: Key Differences Researchers Should Know
BPC-157 vs TB-500 — structural differences, mechanisms of action, and which research contexts each peptide is best suited for.
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What Is GHK-Cu? Copper Peptide Research Guide 2026
GHK-Cu research guide — copper peptide mechanisms, research applications, and UK sourcing information.
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What Is Ipamorelin? Growth Hormone Secretagogue Research Guide
Ipamorelin research guide — selective GHSR agonist, GH axis studies, and UK sourcing.
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What Is CJC-1295? GHRH Analogue Research Guide 2026
CJC-1295 research guide — GHRH analogue mechanism, DAC modification, and UK sourcing information.
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CJC-1295 vs Ipamorelin: How These Two Peptides Compare
CJC-1295 vs Ipamorelin — different receptors, different mechanisms, and how they are used together in GH axis research.
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What Is Bacteriostatic Water? Peptide Reconstitution Explained
Bacteriostatic water explained — what it is, why it matters for peptide reconstitution, and how to use it correctly.
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How to Read HPLC Results on a Peptide COA
How to read HPLC chromatograms on your peptide COA — purity percentages, peak analysis, and what to look for.
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Best Research Peptides UK (2026) | Top 10 List & Buying Guide
Top 10 research peptides in the UK for 2026 — what researchers are buying and why.
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What Is Retatrutide? Mechanism, Trial Evidence & UK Status
An evidence-based overview of retatrutide — the first-in-class triple hormone receptor agonist — covering how it is studied to work, the published clinical-trial data, and its research-use-only status in the UK.
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What Is Tesamorelin? GHRH Analogue Mechanism & UK Status
An evidence-based overview of tesamorelin — a stabilised GHRH analogue — covering how it is studied to work, the clinical data behind its narrow approved use, and its research-use-only status in the UK.
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What Is MOTS-c? Mitochondrial Peptide Research Guide
An overview of MOTS-c — a mitochondrial-derived peptide — covering how it is studied in metabolic research, the current evidence base, and its research-use-only status in the UK.
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What Is NAD+? Coenzyme Research Guide
An overview of NAD+ — a central cellular coenzyme — covering its role in energy metabolism, why it is studied in ageing research, and its research-use-only status in the UK.
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What Is Semax? Nootropic Peptide Research Guide
An overview of Semax — a synthetic heptapeptide — covering how it is studied in cognitive and neuroprotection research, and its research-use-only status in the UK.
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What Is Selank? Anxiolytic Peptide Research Guide
An overview of Selank — a synthetic tuftsin-analogue peptide — covering how it is studied in anxiety and cognition research, and its research-use-only status in the UK.
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What Is KPV? Anti-Inflammatory Tripeptide Research Guide
An overview of KPV — the Lys-Pro-Val tripeptide — covering how it is studied in inflammation and tissue research, and its research-use-only status in the UK.
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What Is LL-37? Antimicrobial Peptide Research Guide
An overview of LL-37 — the human cathelicidin peptide — covering how it is studied in antimicrobial and immune research, and its research-use-only status in the UK.
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What Is DSIP? Delta Sleep-Inducing Peptide Research Guide
An overview of DSIP — delta sleep-inducing peptide — covering how it is studied in sleep and stress research, the limits of the evidence, and its research-use-only status in the UK.
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What Is Epithalon? Telomerase & Longevity Peptide Research Guide
An overview of Epithalon — a synthetic pineal-derived tetrapeptide — covering how it is studied in telomerase and ageing research, and its research-use-only status in the UK.
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What Is Thymosin Alpha-1? Immune Peptide Research Guide
An overview of Thymosin Alpha-1 — an immune-modulating peptide — covering how it is studied in immunology research, its approved use elsewhere, and its research-use-only status in the UK.
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What Is IGF-1 LR3? Growth Factor Research Guide
An overview of IGF-1 LR3 — a long-acting IGF-1 analogue — covering how it is studied in growth and cell research, its potency and prohibited-in-sport status, and its research-use-only status in the UK.
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What Is SLU-PP-332? Exercise-Mimetic Research Compound Guide
An overview of SLU-PP-332 — a synthetic ERR agonist — covering how it is studied as an 'exercise mimetic' in early metabolic research, and its research-use-only status in the UK.
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What Is Melanotan-1? Melanocortin Peptide Research Guide
An overview of Melanotan-1 — an alpha-MSH analogue — covering the melanocortin pathway, its narrow approved medical use, and its research-use-only status in the UK.
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What Is Melanotan-2? Melanocortin Peptide Research Guide
An overview of Melanotan-2 — an alpha-MSH analogue — covering the melanocortin pathway, why regulators have warned against its sale for human use, and its research-use-only status in the UK.
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What Is PT-141? Melanocortin Peptide Research Guide
An overview of PT-141 — bremelanotide — covering the melanocortin-4 pathway, its narrow approved medical use, and its research-use-only status in the UK.
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What Is Kisspeptin-10? Reproductive Hormone Research Guide
An overview of Kisspeptin-10 — a reproductive neuropeptide — covering its role in the hypothalamic-pituitary-gonadal axis, the state of clinical research, and its research-use-only status in the UK.
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What Is GLOW Blend? Research Peptide Blend Guide
An overview of the GLOW Blend — a research peptide blend of BPC-157, TB-500, GHK-Cu — covering its components, how blends are studied in dermal and tissue research, and its research-use-only status in the UK.
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What Is KLOW Blend? Research Peptide Blend Guide
An overview of the KLOW Blend — a research peptide blend of TB-500, BPC-157, KPV, GHK-Cu — covering its components, how blends are studied in tissue, repair and anti-inflammatory research, and its research-use-only status in the UK.
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What Is WOLVERINE Blend? Research Peptide Blend Guide
An overview of the WOLVERINE Blend — a research peptide blend of BPC-157, TB-500 — covering its components, how blends are studied in tissue repair and regenerative research, and its research-use-only status in the UK.
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The MHRA, Research Peptides & UK Compliance: What Changed in 2026
A plain-English guide to the UK regulatory picture for research peptides in 2026 — what the MHRA's action targeted, what 'research use only' actually means, and what compliant, transparent sourcing looks like.
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Semax vs Selank: Key Differences for Research
Semax and Selank are often compared because both are synthetic heptapeptides developed in Russia and studied as nootropics. This guide sets out how they differ in origin, mechanism and research focus.
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Retatrutide vs Tesamorelin: Two Different Metabolic Pathways
Retatrutide and Tesamorelin are both studied in metabolic research, but they act through completely different pathways. This guide explains the distinction and their very different regulatory positions.
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MOTS-c vs Retatrutide: Mitochondrial vs Incretin Research
MOTS-c and Retatrutide both appear in metabolic research but represent very different approaches — a mitochondrial signalling peptide versus a multi-receptor incretin agonist.
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Tesamorelin vs CJC-1295: Comparing GHRH Analogues
Tesamorelin and CJC-1295 are both growth-hormone-releasing-hormone (GHRH) analogues studied in the GH axis, but they differ in structure, half-life and regulatory standing.
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BPC-157 vs KPV: Comparing Two Repair & Inflammation Peptides
BPC-157 and KPV are both studied in tissue and inflammation research, but they are different sizes, come from different origins, and are examined for different primary mechanisms.
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Melanotan-1 vs Melanotan-2: Key Differences & Regulatory Status
Melanotan-1 and Melanotan-2 are both alpha-MSH analogues studied in the melanocortin pathway, but they differ in receptor selectivity and, importantly, in regulatory status.
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Melanotan-2 vs PT-141: How the Two Melanocortin Compounds Differ
PT-141 (bremelanotide) is structurally derived from Melanotan-2, but the two differ in receptor focus and regulatory status. This guide explains the distinction.
Read GuideDisclaimer: All guides are written for research and laboratory purposes only. Products sold on this site are not intended for human consumption. Always follow UK research regulations and institutional guidelines.