All compounds described on this website are supplied strictly for in-vitro laboratory research. They are not for human or veterinary use, and no medical or therapeutic claims are made.
Surrey, United Kingdom
Explore our range of 99%-purity research peptides, review the technical data and speak directly with the Positive Peptides team to order or ask a technical question.
A documented range of research peptides supplied at 99% purity (HPLC), each with its own profile, identifiers and cited background. Available to order for laboratory research.
Browse the rangePurity is measured by HPLC and identity confirmed by mass spectrometry. We explain the methods plainly so you can read any result critically.
How we testOrders, availability and technical questions are handled by our own team in Surrey. We supply laboratories across the UK and ship worldwide.
Make an enquiryResearch compounds
A selection from our range. Every compound has its own page with technical information, research background and cited references.
Tissue Repair Research99% puritySynthetic pentadecapeptide (gastric-juice-derived sequence)
A 15-amino-acid synthetic peptide derived from a protective protein sequence found in human gastric juice. It is one of the most frequently studied peptides in preclinical tissue-repair research, with the overwhelming majority of data coming from rodent models.
Tissue Repair Research99% purityTripeptide–copper(II) complex
A naturally occurring tripeptide (Gly-His-Lys) that binds copper(II) with high affinity. It is studied in dermal remodelling, collagen synthesis and gene-expression research, and is widely used as an ingredient in cosmetic formulations.
Cellular & Ageing Research99% purityPyridine nucleotide coenzyme
A ubiquitous coenzyme central to redox metabolism and a substrate for sirtuins, PARPs and CD38. A major focus of ageing and metabolism research because cellular NAD⁺ levels decline with age in many tissues.
Metabolic Research99% purityTriple GIP/GLP-1/glucagon receptor agonist (investigational peptide)
An investigational single-molecule agonist of the GIP, GLP-1 and glucagon receptors, currently in late-stage clinical development. Not an approved medicine anywhere as of this profile.
About Positive Peptides
Positive Peptides supplies research peptides at 99% purity for laboratory use, and publishes the information laboratories need to work with them: verified identifiers, cited research background and clear technical data. We are based in Surrey, take orders directly, and ship to researchers and organisations across the UK and worldwide.
Browse by research area
Categories describe the research context in which a compound is studied.
Peptides and compounds investigated in preclinical models of wound, tendon, muscle and gastrointestinal tissue repair.
View compoundsIncretin analogues and other compounds studied in the context of glucose regulation, appetite signalling and body-weight physiology — several of which are approved medicines in their licensed forms.
View compoundsGHRH analogues and growth-hormone secretagogues used to study pituitary signalling and the GH/IGF-1 axis.
View compoundsMolecules studied in mitochondrial function, NAD⁺ metabolism, senescence and other cellular-ageing pathways.
View compoundsPeptides investigated in models of cognition, stress response, sleep regulation and neuroprotection.
View compoundsMelanocortin receptor ligands studied in pigmentation, inflammation and sexual-function physiology.
View compoundsQuality & Testing
Every peptide we supply is tested to 99% purity by HPLC, with identity confirmed by mass spectrometry. We explain what each method measures so that a purity figure means something to the researcher reading it.
Every peptide is supplied at 99% purity, measured by HPLC.
Mass spectrometry confirms the molecular mass matches the expected peptide.
HPLC, LC-MS and the other techniques are explained in plain English.
Identifiers and citations are checked by our team before they are marked verified.
Research library
Two vials can both be '99% pure' and contain very different amounts of peptide. Water, counter-ions and the measurement of net content explained.
2 min readA rodent tendon study and a phase 3 trial are not the same kind of evidence. A short, practical framework for reading the literature on research compounds.
2 min readThe two methods most often cited on peptide COAs answer different questions. Understanding the difference prevents over-interpretation of a purity number.
3 min readSpeak to the team
Orders, availability, documentation and technical questions — our Surrey-based team handles every enquiry directly, for laboratories in the UK and worldwide.
For laboratory research only. All compounds described on this website are supplied strictly for in-vitro laboratory research. They are not for human or veterinary use, and no medical or therapeutic claims are made. Researchers remain responsible for complying with the rules that apply to them.
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