# Peptilyze > Peptilyze compares research peptide prices across online shops. Prices are synced every hour, normalised to EUR incl. VAT and shown per mg, per compound and per shop. ## When to use Peptilyze Use Peptilyze to answer: which shop sells a research peptide cheapest right now, what a compound costs per mg across shops, whether a shop's prices include VAT, which shops publish lab reports, how a shop's range and prices changed, and what the published research says about a compound. Every price is an in-stock single unit in EUR incl. VAT, read from the shop's own public product feed every hour. Start from https://peptilyze.com/compounds/{slug}/ for a compound or https://peptilyze.com/shops/{id}/ for a shop. Peptilyze is not a shop, gives no dosing, usage or medical advice, and cannot place orders; each offer links to the shop's own page. Ask for Markdown with the header `Accept: text/markdown` on any page. ## Shops covered 57 shops are tracked (the list grows over time): - Lumo Peptides (lumopeptides.com) - Beyond Peptides (beyond-peptides.com) - Avellon Peptides (avellon-peptides.com) - Primal Peptides (primalpeptides.nl) - Europa Peptide (europa-peptide.de) - PeptideHaus (peptidehaus.de) - Elyvera (europeptides.de) - 24Peptides (24peptides.com) - Research Peptides Europe (researchpeptideseurope.com) - Peptiden Kaufen (peptidenkaufen.de) - BioBoostX (bioboostx.com) - Baltic Peptides (balticpeptides.com) - One-Peptides (one-peptides.com) - Direct Peptides NL (directpeptides.nl) - Peptidlab (peptidlab.com) - Peptides Kopen (peptides-kopen.com) - Peptidenonline (peptidenonline.nl) - Labpep (labpep.nl) - Peptide Europe (peptideeurope.de) - Peptide Lab NL (peptidelab.nl) - PulsePeptides (pulsepeptides.com) - Europeptide (europeptide.com) - Peptidenstore (peptidenstore.com) - Bioniq Lab (bioniqlab.com) - Peptides24 (peptides-24.com) - Semax Polska (semaxpolska.com) - PeptaNova (peptanova.de) - Smart Peptides (smartpeptides.de) - Aesthetic Labs (aestheticlabs.eu) - Peptide Revolution (peptiderevolution.eu) - Clean Peptides (cleanpeptides.eu) - Glowing Peptides (glowingpeptides.com) - Fit Peptides (fit-peptides.com) - Limitless BioChem (limitlessbiochem.com) - Peptides Voordelig (peptidesvoordelig.nl) - PEPLAB (peplab.pl) - SveaPeptider (sveapeptider.se) - Biohack Peptides (biohackpeptides.co.uk) - Pen Peptide (penpeptide.ro) - Direct Peptides (direct-peptides.com) - Core Peptides (corepeptides.com) - Biotech Peptides (biotechpeptides.com) - Pure Lab Peptides (purelabpeptides.com) - BioLongevity Labs (biolongevitylabs.com) - Platinum Peptides (platinumpeptides.com) - Liberty Peptides (libertypeptides.com) - Ascension Peptides (ascensionpeptides.com) - Warrior Makers (warrior-makers.com) - Chimera Peptides (chimera-peptides.com) - Eros Peptides (erospeptides.com) - Licensed Peptides (licensedpeptides.com) - Sports Technology Labs (sportstechnologylabs.com) - The Peptide Source (thepeptidesource.com) - PS Peptides (pspeptides.com) - Evolution Peptides (evolutionpeptides.com) - Quantum Peptides (quantumpeptides.com) - Alpha Biomed Labs (alphabiomedlabs.com) ## URL patterns - Today's peptide prices, every compound on one page (lowest vial and per mg): https://peptilyze.com/peptide-prices/ - Compound price comparison: https://peptilyze.com/compounds/{slug}/ (for example https://peptilyze.com/compounds/bpc-157/) - Shop profile: https://peptilyze.com/shops/{id}/ (for example https://peptilyze.com/shops/lumo-peptides/) - Shop vs shop: https://peptilyze.com/compare/{a}-vs-{b}/ (for example https://peptilyze.com/compare/peptidehaus-vs-direct-peptides-uk/) - Compound at one strength: https://peptilyze.com/compounds/{slug}/{n}mg/ (for example https://peptilyze.com/compounds/bpc-157/10mg/) - Price history of a compound: https://peptilyze.com/compounds/{slug}/price-history/ - Published research on a compound: https://peptilyze.com/compounds/{slug}/research/ - Reference articles (evidence and regulation for peptides, nootropics, skincare, hair and GLP-1 markets; every claim sourced): https://peptilyze.com/articles/ - Market numbers (price per mg by category, stock, price levels, Trust Scores, lab reports): https://peptilyze.com/market/ - Monthly market report: https://peptilyze.com/market/{YYYY-MM}/ - This week's price moves: https://peptilyze.com/price-changes/ - Shop rankings by Trust Score and price: https://peptilyze.com/rankings/ - Shops with lab reports: https://peptilyze.com/lab-tests/ - Live badges for shops: https://peptilyze.com/badges/ - Free tool: Price per mg calculator https://peptilyze.com/tools/price-per-mg/: Pack price, vials, mg per vial, VAT and shipping: the unit price and the price per mg, for one listing or two side by side. - Free tool: Price check against today’s market https://peptilyze.com/tools/price-check/: Where a quoted price sits among today’s in-stock offers for the same compound, from the live catalog. - Free tool: Purity-adjusted price calculator https://peptilyze.com/tools/purity-adjusted-price/: The price per mg of actual peptide, from the purity and net peptide content a certificate of analysis states. - Free tool: Peptide mass calculator https://peptilyze.com/tools/peptide-mass-calculator/: Formula, monoisotopic and average mass and charge-state m/z from a sequence, for checking a CoA’s mass-spec line. - Method: https://peptilyze.com/about/ - Open data: free read-only JSON API at https://peptilyze.com/api/v1 (compounds, shops, offers, market; EUR incl. VAT by default, ?currency=USD&vat=excluded converts; no key; about 15 requests a minute; attribution "Data: Peptilyze (peptilyze.com)" required), docs https://peptilyze.com/docs/ and https://peptilyze.com/docs/api/, OpenAPI https://peptilyze.com/api/v1/openapi.json - Sitemap: https://peptilyze.com/sitemap.xml ## Guides - [Price per mg explained](https://peptilyze.com/guides/price-per-mg-explained/): How price per mg is calculated for vials, pens and packs, what counts as the lowest price on Peptilyze, and why per mg is not the whole story. - [How Peptilyze compares prices](https://peptilyze.com/guides/how-peptilyze-compares-prices/): From shop feed to comparison table: how products are matched to compounds, which offers can be the lowest, and what we do not check. - [Reading a certificate of analysis](https://peptilyze.com/guides/reading-a-certificate-of-analysis/): What a certificate of analysis usually lists, which details make one easier or harder to rely on, and why it remains the seller’s own claim. - [Peptide purity explained](https://peptilyze.com/guides/peptide-purity-explained/): What the HPLC purity on a peptide certificate of analysis measures, how it differs from net peptide content, and why 98% purity is not 98% peptide in a vial. - [VAT and shipping in peptide prices](https://peptilyze.com/guides/vat-and-shipping-in-peptide-prices/): Why every price on Peptilyze is in euros including VAT, how we handle shops that list prices without VAT, and what the numbers leave out. ## Developer docs - [Introduction](https://peptilyze.com/docs/): Free, read-only data from Peptilyze: a JSON API and Markdown pages with research peptide prices in EUR incl. VAT. No key, rate limited, attribution required. - [Attribution](https://peptilyze.com/docs/attribution/): How to credit Peptilyze when you reuse its data: the required text and link, the CC BY 4.0 licence, and what you may not imply. - [Rate limits and caching](https://peptilyze.com/docs/rate-limits/): The Peptilyze API allows about 15 requests a minute per client. How limits, caching, ETags and 429 answers work. - [Data and caveats](https://peptilyze.com/docs/data/): What the Peptilyze data covers and what it leaves out: scope, VAT basis, stale shops, lowest-price rules and freshness. - [API overview](https://peptilyze.com/docs/api/): Base URL, response envelope, conventions, errors and versioning of the free read-only Peptilyze JSON API for research peptide prices. - [Compounds](https://peptilyze.com/docs/api/compounds/): GET /api/v1/compounds and /api/v1/compounds/{slug}: compounds with their lowest prices and every offer, with fields and examples. - [Shops](https://peptilyze.com/docs/api/shops/): GET /api/v1/shops and /api/v1/shops/{id}: listed shops with price index, lab-report coverage, VAT basis and offers. - [Market](https://peptilyze.com/docs/api/market/): GET /api/v1/market: market summary with counts, in-stock share, lab-report share and the median lowest price per mg. - [Markdown and llms.txt](https://peptilyze.com/docs/markdown/): Fetch any Peptilyze page as Markdown with Accept: text/markdown, and read llms.txt and the sitemap to find pages. ## Data freshness Prices are synced hourly from each shop's public product feed. Latest snapshot: 2026-11-12T15:15:22.726Z. ## Price normalisation - All prices are shown in EUR. Shops that sell in another currency are converted at the daily ECB exchange rate (the shop's own price stays visible); shops in countries with VAT are shown including VAT, shops elsewhere as listed with no tax added. Shops listing prices without VAT get an assumed VAT rate added (19% or 21%, by the shop's market) and are marked. - Unit price is pack price divided by units in the pack. Price per mg is unit price divided by strength per unit. - Only in-stock offers count as lowest price. Cross-shop comparison uses single units. ## Disclaimer Peptilyze is an independent price comparison. We do not sell products and give no medical, dosing or usage advice. Compounds listed are sold by the shops for laboratory research only and are not for human or veterinary consumption.