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Compare peptide prices. Inspect the proof.
PeptidePrices is an independent peptide price comparison and vendor review platform covering 336 vendors in its public directory. Our daily peptide price index tracks 9,141 in-stock listings, with customer discounts and price history in one place. Each vendor has a dedicated editorial review by Jack Ryan, our editorial lead.
Explore 18,403 COAs checked in our on-site library. Certificates attach directly to eligible listings when vendor, compound, strength and unit match. Open the report beside the price to inspect its laboratory, test panel, measured results and verification record—without hunting across supplier websites.
Our peptide research blog publishes original market data, such as the growth-hormone peptide storefront census, alongside vendor comparisons, industry news and research roundups.
Frequently asked
Do you sell peptides?
No. PeptidePrices is an independent price-comparison and vendor-review platform. We don't sell anything ourselves — we track what other vendors charge and score the available evidence with a published rubric. Buying happens on each vendor's own site.
How do you verify COAs?
We manually check each vendor's published Certificates of Analysis against the lab named on the COA (Janoshik, Colmaric, Vanguard, Freedom Diagnostics, MZ Biolabs, etc.). For vendors that offer batch-linked QR codes, we verify a sample batch ID matches the lab's database. Mismatches get flagged publicly on the vendor profile.
What does COA actually mean?
Certificate of Analysis — an independent lab report confirming a peptide's purity (usually via HPLC), identity (mass spec), and safety parameters (endotoxin, sterility, heavy metals). Named, batch-linked, publicly available COAs account for 40% of our vendor evidence score.
How often are prices updated?
Every 24 hours. Our scrapers check each vendor's product pages daily. Every listing on the site shows when it was last verified — usually within the last day.
Are peptides legal?
Legal status depends on the compound, product, intended use, seller conduct, and jurisdiction. A research-use-only label does not establish that every sale, import, or use is lawful. Consult qualified counsel about a specific transaction.
How do your affiliate relationships work?
Some vendor links are affiliate links, which means we may earn a commission on qualifying purchases at no extra cost to you. Vendor evidence scores use our published rubric (40% COA / 20% reputation / 20% transparency / 20% operations). Affiliate status has no effect on a vendor's score or position — the full disclosure is in our site footer and at /about.
What does a high evidence score mean?
A high score means the reviewed evidence is stronger across COAs, reputation, transparency, and operations. It is not a guarantee of product quality, safety, or suitability. Match the exact product and lot to its batch COA and review the underlying findings before ordering.