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UK Buying Guide
Where to Buy Kisspeptin in the UK
Kisspeptin is supplied in several fragment lengths, and listings often omit which one. This guide explains why that matters and what is available in the UK.
Identity by mass spectrometryPurity by HPLCUK & EU deliverySealed on arrival
Overview
What Is Kisspeptin?
Kisspeptin is a neuropeptide encoded by the KISS1 gene, studied in reproductive endocrinology and hypothalamic signalling research. It exists as several biologically relevant fragments, so the Certificate of Analysis should state which fragment is supplied. It is provided as lyophilised powder in a sealed vial.
Classification
Synthetic neuropeptide research compound
Format supplied
vial
Fragment supplied
Stated per batch; the short active C-terminal fragment unless specified otherwise
Structural requirement
C-terminal amidation confirmed as part of identity
Purity specification
99%+ by HPLC, chromatogram and analysis date on the certificate
Research use only
Not a medicine. Not for human or veterinary consumption.
Available Options
Kisspeptin Options Available From Arma Peptides
Kisspeptin is supplied as a single lyophilised vial. Before comparing prices across UK suppliers, confirm they are quoting the same fragment — a kisspeptin-54 price against a kisspeptin-10 price is not a comparison.
Product
Format
Size
Price
Stock
Handling & Delivery
Kisspeptin Storage and Handling
The handling considerations follow from a short amidated peptide with basic residues.
Aqueous Solubility Is Good
Kisspeptin-10 dissolves readily in bacteriostatic water. Poor dissolution should prompt a question about identity rather than a change of technique.
Adsorption to Plastic Is Real
Basic peptides bind to some plastic surfaces at low concentration. Use glass or low-binding labware if the concentration you calculated needs to be the concentration you have.
Aliquot and Freeze Once
Reconstituted solution is best split into single-use portions and frozen at −20 °C, thawed once each.
Dispatch and Damage Cover
Same working day dispatch before the cut-off, tracked and plain-packaged, with replacement or full refund on damage photographed and reported within 48 hours.
Due Diligence
Which Kisspeptin? The Fragment Number Is Not Optional
Kisspeptin is a family, not a single molecule. A listing that says only “kisspeptin” has not told you what is in the vial.
- STEP 01
Kisspeptin-10 Versus Kisspeptin-54
Kisspeptin-10 is the short C-terminal active fragment; kisspeptin-54, metastin, is the full-length peptide and costs several times more. The number is the product, and a listing without it is unusable.
- STEP 02
Amidated C-Terminus Is Part of the Identity
The active fragment requires a C-terminal amide. Without amidation the molecular weight differs by one unit region and the molecule is not the compound described.
- STEP 03
Species Variant Should Be Stated
Human, murine and rat kisspeptin sequences differ. For any comparative work the species variant belongs on the certificate, not in a follow-up email.
- STEP 04
Short Fragment, Cheap Purity
Kisspeptin-10 is a decapeptide and easy to purify, so weight your judgement towards identity, amidation status and net peptide content rather than the purity headline.
Sold as a research reagent. Not a medicinal product, not for consumption by humans or animals, and not for use in diagnostic procedures.
FAQ
Kisspeptin in the UK: Questions Researchers Ask Before Ordering
+Is kisspeptin legal to buy in the UK?
Yes, for laboratory research. It is not a licensed medicine and is not supplied for human or veterinary consumption.
+What is the difference between kisspeptin-10 and kisspeptin-54?
Kisspeptin-10 is the short C-terminal active fragment; kisspeptin-54 (metastin) is the full-length peptide. The longer sequence costs substantially more, so any price comparison has to specify which fragment.
+Why does amidation matter?
The C-terminal amide is part of the active structure. An unamidated free-acid version is a different molecule and should not be sold interchangeably.
+Which kisspeptin fragment am I ordering?
The Certificate of Analysis states the exact sequence supplied, and the molecular weight on the mass spectrometry report confirms it. Any listing that names only “kisspeptin” without a sequence is incomplete.
+Why are there multiple kisspeptin fragments?
The parent peptide is cleaved into shorter fragments that retain receptor activity, and different fragments are used in different research designs. They are not interchangeable.
+Does the species variant matter?
For comparative research, yes. Human, rat and murine sequences differ, so the certificate should name the variant supplied rather than leaving it implied.
+How should kisspeptin be stored?
Sealed at −20 °C for long-term holding and 2–8 °C short term. Reconstituted solution should be aliquoted, frozen and thawed once, and handled in low-binding labware.
+Can unopened kisspeptin be returned?
Within 14 days of receipt, unopened and in original sealed packaging, yes. Unsealed vials are excluded for health-protection reasons and statutory rights on faulty goods remain.
More Guides
Related UK Buying Guides
Related UK buying guides, each written around what actually differs between suppliers.