Kisspeptin – 10mg

Researchers who buy Kisspeptin-10 research peptide are typically studying its behavior as an agonist at GPR54 (also designated KISS1R), the G-protein-coupled receptor that serves as the primary upstream activator of gonadotropin-releasing hormone (GnRH) neurons. Kisspeptin-10 is the minimal kisspeptin sequence reported to retain full intrinsic receptor-agonist bioactivity. The summary below reflects the published preclinical and clinical literature and is provided strictly for research and educational reference — it does not describe an intended effect of this product in humans or animals.

In this reference:

• What Is Kisspeptin-10?
• Proposed Mechanism of Action
• Chemical Identity
• Purity, Storage & Quality
• Research Applications
• What the Human Evidence Shows
• Frequently Asked Questions

What Is Kisspeptin-10?

Kisspeptin-10 is the C-terminal decapeptide fragment of the KISS1 gene product, reported in the published literature to be the minimal kisspeptin sequence retaining full intrinsic bioactivity at its receptor. Kisspeptin/GPR54 signaling was identified in seminal 2003 human genetics studies as essential for puberty onset and normal reproductive function: loss-of-function KISS1R mutations are associated with hypogonadotropic hypogonadism (absent or delayed puberty), while gain-of-function mutations are associated with precocious puberty — establishing this signaling axis as a central regulator of the hypothalamic-pituitary-gonadal system in human physiology research.

Researchers sourcing this compound are typically studying GPR54 receptor pharmacology and its role as an upstream gatekeeper of GnRH neuron activation, distinct from GnRH-receptor-active research compounds that act one step downstream in the same signaling cascade.

Proposed Mechanism of Action

Published research describes Kisspeptin-10 as a potent GPR54 agonist, with receptor activation on GnRH neurons triggering GnRH release, which subsequently drives pituitary luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion in the hypothalamic-pituitary-gonadal axis. A controlled human dose-response study administering intravenous kisspeptin-10 bolus doses (0.01-3.0 μg/kg) to healthy men reported that kisspeptin-10 boluses potently evoked LH secretion, and that continuous infusion increased testosterone, LH pulse frequency, and LH pulse size (George JT, et al., J Clin Endocrinol Metab. 2011;96(8):E1228-36; PMID 21632807).

Separate published research examining kisspeptin-10’s effects on reproductive hormone release reported sexual dimorphism in the response pattern between men and women (PMID 21976724), a finding study authors proposed reflects underlying differences in kisspeptin-neuron sensitivity or downstream GnRH-pulse-generator physiology between sexes — an active area of continuing published research.

Chemical Identity

Sequence Basis	C-terminal decapeptide of KISS1 gene product
Molecular Formula	C63H83N17O14
Molecular Weight	~1302.4 g/mol
Sequence Length	10 amino acids (decapeptide)
Appearance	White to off-white lyophilized powder

Purity, Storage & Quality

First Class Science supplies this Kisspeptin-10 research peptide vial at research-grade purity, verified by independent third-party HPLC testing and mass spectrometry. A Certificate of Analysis is available for every batch at our Certificate of Analysis page, listing the specific lot’s purity result, molecular-weight confirmation, and test date.

Store the lyophilized (freeze-dried) compound at −20°C for long-term stability. This vial must be reconstituted with bacteriostatic or sterile water before laboratory use; after reconstitution, refrigerate at 2–8°C and use within 4–6 weeks. Avoid repeated freeze-thaw cycles and prolonged exposure to light or room-temperature conditions, both of which are associated with accelerated peptide degradation in handling literature.

Important: This item is manufactured strictly for research purposes. It is not intended for human or veterinary use and is distributed solely for laboratory and scientific investigation.

Preparing Solutions for Laboratory Use

Laboratories reconstituting lyophilized Kisspeptin-10 for in vitro or animal-model research typically follow standard peptide-handling practice: the vial is brought to room temperature before opening, and a diluent — commonly reconstitution solution or sterile water for injection (SWFI) — is added slowly down the interior wall of the vial rather than directly onto the lyophilized material, to reduce foaming and mechanical stress on the peptide. The vial is then gently swirled, never shaken, until the powder is fully dissolved.

Stock-solution concentration for a given protocol is calculated by dividing the total peptide mass in the vial by the volume of diluent added, and that calculation should be recorded in the study’s protocol documentation. This page describes general laboratory reconstitution practice for research use and is not a dosing guide for human or animal administration.

Quality Control Methodology

Each production batch of this Kisspeptin-10 research peptide undergoes independent third-party testing before release. High-performance liquid chromatography (HPLC) confirms purity by measuring the proportion of the target peptide relative to synthesis by-products or degradation fragments. Mass spectrometry separately confirms molecular identity, verifying that the measured mass of the material matches the expected ~1302.4 g/mol molecular weight of Kisspeptin-10. Both results are recorded on the batch’s published Certificate of Analysis, letting researchers independently verify identity and purity rather than relying on manufacturer claims alone.

Who Should Buy Kisspeptin-10 Research Peptide

Researchers who buy Kisspeptin-10 from First Class Science are typically university and academic laboratories, contract research organizations (CROs), and biotechnology R&D teams running in vitro receptor-binding assays or human/animal-model studies on GPR54 pharmacology and hypothalamic-pituitary-gonadal axis signaling. First Class Science requires that all research-peptide orders be placed by parties who acknowledge and agree to the research-use-only terms stated on this page prior to purchase.

Research Applications

The published literature on Kisspeptin-10 spans several distinct research areas. Each is summarized below strictly as a description of what has been studied in animal or controlled clinical models — not as a claim about effects for any individual using this product.

Reproductive Neuroendocrinology and Puberty Research

The foundational human-genetics finding establishing KISS1/GPR54 as essential for puberty onset and reproductive function remains the reference point for research on this signaling axis, informing subsequent pharmacological characterization of kisspeptin-10 itself.

Gonadotropin-Release Dose-Response Research

The controlled human dose-response study (George et al., 2011, PMID 21632807) established the pharmacodynamic profile of intravenous kisspeptin-10 in men, characterizing its effects on LH pulse frequency and amplitude.

Sex-Differential Response Research

Published research comparing kisspeptin-10’s effects across sexes reported sexual dimorphism in reproductive-hormone response (PMID 21976724), an active area of continuing published research into sex-specific GnRH-pulse-generator physiology.

What the Human Evidence Shows

Researchers evaluating Kisspeptin-10 should know that it has a more substantial published human clinical-research record than many compounds in this catalog, reflecting the compound’s identified role in human reproductive endocrinology. Controlled studies have examined intravenous and, in related published research on other kisspeptin isoforms, intranasal administration in healthy men and women and in patients with reproductive disorders such as hypothalamic amenorrhea, generally reporting rapid stimulation of gonadotropin release without reported adverse events in those specific controlled research settings.

This published clinical-research record does not constitute FDA approval, does not establish safety or efficacy for any indication, and does not support human self-administration outside a formal, medically supervised clinical-research setting. Kisspeptin-10 is not an FDA-approved drug for any indication, has not completed a drug-development pathway, and is not evaluated by the FDA for safety or efficacy in humans or animals under this research-use-only sale.

This distinction matters for how findings from this page should be characterized. A researcher citing the George et al. dose-response study or related human research in a grant application or protocol design should describe it accurately as controlled clinical-research findings in a specific, defined study population, not as an approved therapeutic profile.

Common Research Study Designs

Published studies referenced throughout this page typically fall into two designs: human genetics studies identifying loss-of-function and gain-of-function KISS1R mutations and their reproductive phenotypes; and controlled clinical pharmacology studies administering kisspeptin-10 to healthy volunteers or patient populations and measuring downstream gonadotropin response. Understanding which design underlies a given finding is important context for interpreting the strength of any individual claim in the literature.

Frequently Asked Questions

What is the purity of this Kisspeptin-10 research peptide?
Every batch is independently verified via third-party HPLC and mass-spectrometry testing, with a Certificate of Analysis published for each lot.

How should Kisspeptin-10 research peptide be stored?
Store the lyophilized powder at −20°C. After reconstitution, refrigerate at 2–8°C and use within 4–6 weeks; avoid repeated freeze-thaw cycles.

Is Kisspeptin-10 approved for human or animal use?
No. Kisspeptin-10 is not an FDA-approved drug for any indication and has not completed a drug-development pathway. It is sold exclusively for in vitro and laboratory research use.

Has Kisspeptin-10 been tested in humans?
Yes. Controlled clinical pharmacology studies have administered kisspeptin-10 to healthy men and, in related published research on other kisspeptin isoforms, to women and patients with reproductive disorders, measuring gonadotropin (LH/FSH) response (PMID 21632807, PMID 21976724). This is controlled clinical-research evidence, not an approval record.

What is the proposed mechanism of Kisspeptin-10 in research models?
Kisspeptin-10 is studied as a GPR54 (KISS1R) receptor agonist, acting upstream of GnRH neurons to stimulate GnRH release, which in turn drives pituitary LH/FSH secretion.

What does the Certificate of Analysis show?
The Certificate of Analysis published for each batch shows the HPLC purity result, mass-spectrometry molecular-weight confirmation, lot number, and test date, allowing researchers to independently verify the identity and purity of the specific batch they receive.

Can Kisspeptin-10 research peptide be shipped internationally?
Shipping availability and any import restrictions for research peptides vary by destination country and are subject to change; researchers should confirm their local import regulations for research-use-only compounds before ordering.

Shipping, Handling & Compliance

This Kisspeptin-10 research peptide ships as a lyophilized powder in a sealed glass vial, packaged to maintain cold-chain integrity in transit where applicable. All orders are subject to the research-use-only terms stated on this page, and First Class Science does not sell this or any other research peptide for human or veterinary administration under any circumstance.

Order tracking, batch-specific documentation requests, and general product questions can be directed to First Class Science customer support, which can confirm current lead times and any destination-specific documentation a receiving institution may require for its own compliance records.

Disclaimer: The research summarized above is drawn from third-party published studies conducted in human or animal contexts. It is provided for research and educational reference only and does not describe an intended use, effect, or benefit of this product for any person or animal.

⊗ ALL ITEMS ARE SOLD FOR RESEARCH USE ONLY. This category covers strictly in vitro laboratory testing and scientific experimentation. Content on this site is for education only and does not authorize human or animal use of any kind, which is prohibited by law. Only trained, licensed professionals should handle these materials. Nothing sold here qualifies as a drug, food, or cosmetic, and none of it may be labeled, advertised, or used as such.