

$80.00
- Free US shipping over $150
- HPLC-tested at 99%+ purity
- US-based fulfillment
Used in Immune Health Protocol and Inflammation & Gut Health Protocol.
Overview
Description
A calming peptide researched for supporting gut comfort and inflammatory signaling balance. Often chosen when digestive irritation, immune sensitivity, or chronic inflammation is the central issue.
KPV is commonly explored in research for intestinal comfort and immune balance pathways— making it a premium option in gut and inflammation-focused protocols.
Scientific Overview
KPV (Lysine–Proline–Valine) is a tripeptide derived from alpha-melanocyte-stimulating hormone (a-MSH). It has been studied for anti-inflammatory and immunomodulatory properties, including regulation of pro-inflammatory cytokine activity and intestinal barrier-related signaling in preclinical models. Research interest includes gut integrity and immune balance mechanisms.
Product Details
- Compound: KPV (Lysine–Proline–Valine tripeptide)
- Vial Size: 10mg
- Purity: ≥99%
- Form: Lyophilized powder
This product is intended strictly for laboratory research purposes only. It is not approved for human or veterinary use by the FDA or any other regulatory agency. Store in a cool, dry environment prior to reconstitution and handle using appropriate laboratory and aseptic techniques.
Frequently asked questions
Yes. Every batch of KPV 10mg undergoes independent third-party testing using High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS). The Certificate of Analysis is published and accessible from the product page.
KPV 10mg sold by MHS Longevity is verified to 99%+ purity, with the result documented in each batch's Certificate of Analysis. Anything below that threshold is rejected before release.
The Certificate of Analysis for KPV 10mg is available directly from the product page and on our Third-Party Test Results page. Each COA includes the batch identifier, test date, testing method, and verified purity percentage.
KPV 10mg ships from our US-based facility with standard or expedited options. Orders over $150 qualify for free standard US shipping. All orders are packaged discreetly with documented handling protocols.
No. KPV 10mg is supplied strictly for laboratory research purposes only. It is not approved by the FDA for human or veterinary use, and it is not intended to diagnose, treat, cure, or prevent any disease.
MHS Longevity is a veteran-owned operation focused on pharmaceutical-grade research compounds. We source from vetted manufacturers, batch-test independently with HPLC and Mass Spectrometry, and publish every Certificate of Analysis. Pricing is transparent and the testing process is documented end-to-end.
KPV has a molecular weight of approximately 342.4 g/mol, with the empirical formula C16H30N4O4. This is documented on each batch's Certificate of Analysis alongside the Mass Spectrometry result.
α-MSH is a 13-amino-acid hormone with the sequence Ac-Ser-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2. KPV is the C-terminal three amino acids of that sequence. The 10-residue central core of α-MSH carries the receptor-binding determinants for the canonical melanocortin receptors that drive pigmentation; KPV retains a portion of the parent's anti-inflammatory activity but with substantially different receptor-engagement properties — possibly through intracellular signaling after cellular uptake rather than via cell-surface MC receptors.
Both molecules appear in gut-research literature but represent distinct mechanistic hypotheses. KPV is studied for melanocortin-pathway anti-inflammatory effects and PEPT1-mediated import into intestinal cells. BPC-157 is a 15-residue peptide derived from a gastric protective protein, studied for cytoprotection through a different proposed mechanism. Researchers choosing between them should match the molecule to the specific pathway under investigation.
KPV is sent to an independent third-party laboratory for HPLC and Mass Spectrometry analysis before each batch is released. The lab's identifier and test date are published on the Certificate of Analysis for that batch.
Research & buying
The evidence behind KPV 10mg and the questions to ask any vendor before you order.
Research details — KPV 10mg
KPV is a synthetic tripeptide reproducing the last three amino acids of α-melanocyte-stimulating hormone (α-MSH): lysine-proline-valine. The molecule emerged from research in the 1990s and 2000s investigating which fragment of α-MSH is responsible for its anti-inflammatory effects, separate from its pigmentation-related signaling. KPV has been studied extensively in models of gut barrier function, inflammatory bowel models, and skin inflammation; the appeal of a 3-residue active fragment is straightforward — it is short enough to synthesize cleanly and stable enough for in-vivo work. This guide explains what KPV is, the published research context, and how each batch is independently verified.
What is KPV?
KPV has the amino-acid sequence Lys-Pro-Val — three residues, the absolute minimum for a 'peptide' designation. The molecular weight is approximately 342.4 g/mol with the empirical formula C16H30N4O4. It is supplied as a lyophilized white powder for laboratory reconstitution. In the parent α-MSH peptide, these three residues sit at the C-terminus (positions 11–13 of the 13-amino-acid hormone); the KPV fragment retains a portion of the parent's anti-inflammatory pharmacology while shedding the pigmentation-related signaling associated with the central core of α-MSH.
KPV is sold strictly for laboratory and research use. It is not approved by the FDA or any other regulatory body for human or veterinary use, and nothing in this guide constitutes guidance for human administration.
Research context
Published research on KPV is concentrated in two areas. The first is gut research — studies have examined effects on epithelial-barrier integrity, on inflammation markers in colitis models, and on interaction with cell-surface transporters that import tripeptides into intestinal cells. The second is dermal-inflammation research, where KPV has been studied for effects on keratinocyte cytokine release and dendritic-cell activation. The molecular pharmacology is debated; some studies report melanocortin-receptor-dependent effects, others report intracellular signaling that bypasses cell-surface receptors entirely after PEPT1-mediated import. Researchers should evaluate primary sources directly.
How KPV quality is verified
Every batch of MHS Longevity KPV is submitted to an independent third-party laboratory before release. Tripeptides are technically the simplest peptides to synthesize cleanly, but their small size means that any impurity represents a meaningful mass fraction of the supplied material — quality verification therefore still matters:
- HPLC separates components by chemistry. For KPV, common impurities to watch for are the dipeptide Pro-Val (a deletion variant from incomplete coupling at the first cycle) and unmodified amino acids; both elute at distinguishable retention times. Anything below 99% is rejected.
- Mass Spectrometry confirms the molecular mass matches the published tripeptide. For molecules this small, MS resolution distinguishes the target from common impurities cleanly — single-amino-acid differences are tens of Da apart, well within the resolution range.
What a KPV Certificate of Analysis shows
- Compound name and structural designation. KPV, with full sequence (Lys-Pro-Val) and molecular formula.
- Batch identifier. Unique ID linking certificate to vial.
- Test date. When the analysis was performed.
- Method. HPLC, MS, or both, with column and mobile-phase notes.
- Verified purity %. The HPLC result. We require 99%+.
- Lab and signatures. The independent lab performing the analysis.
Storage and handling (research lab context)
Lyophilized KPV should be stored at -20°C or below for extended stability, though tripeptides are generally more thermally robust than longer sequences and tolerate brief deviations better than 30+ residue molecules. Reconstituted solutions are typically held at 2–8°C and used within the documented stability window. The short length and lack of cysteine, methionine, or tryptophan residues mean KPV has fewer oxidation-sensitive groups than many longer peptides — but standard aseptic technique and avoidance of repeated freeze–thaw cycles still apply.
Further reading
Where to buy KPV 10mg
The same eight questions apply whether you're buying KPV 10mgfrom us or anywhere else. Vendors who can't answer any of them are worth a closer look.
Vendor evaluation checklist
1. Is the Certificate of Analysis public and downloadable?
A vendor unwilling to publish HPLC/MS results for the batch you're buying has nothing to verify their purity claim against.
2. Which testing method was used — HPLC, Mass Spectrometry, or both?
HPLC measures purity. Mass Spectrometry confirms the molecule's identity. Reputable batches go through both.
3. What's the verified purity percentage on the published COA?
Industry research standard is 99%+. Below that, you're paying for a compound diluted with synthesis byproducts.
4. Where does the product ship from?
US-based fulfillment generally means shorter handling times, customs-free delivery, and clearer return remedies.
5. Is the price published at a single list rate, or hidden behind tier locks?
Opaque pricing is a yellow flag. Transparent vendors quote the same number to every customer.
6. What's the free-shipping threshold, if any?
Compare the all-in cost (product + shipping + handling) — not just the headline price.
7. How is the product stored prior to shipment?
Lyophilized peptides degrade with temperature swings. Vendors should disclose temperature-controlled storage.
8. Is there a documented damage-claim and return policy?
Discreet shipping carries handling risk. A clear, written policy protects you when something goes wrong.
MHS LongevityThis site - Price
- $80
- Purity
- 99%+
- Testing
- HPLC + MS
- COA public
- US-based
- Free shipping
- $150+
- Last checked
- May 13, 2026
| Vendor | Price | Listed purity | Testing method | COA public | US-based | Free shipping | Last checked |
|---|---|---|---|---|---|---|---|
MHS LongevityThis site | $80 | 99%+ | HPLC + MS | $150+ | May 13, 2026 |
Competitor data sourced from each vendor's public product page on the date shown. Listed purity reflects each vendor's own published claim; Certificate of Analysis availability is verified at the URL above. Data may have changed since last check.


