Peptide Price Comparison: Compare Peptide Prices Across Verified Vendors
Everything you need to know about peptides
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Side-by-side
Compare any two peptides
Mechanism, dosing, half-life, safety, and live lowest prices — head to head.
Verify before you buy
Check a COA's authenticity
Paste a vendor's Certificate of Analysis link and we'll flag the lab, batch linkage, and common signs of a fabricated or mismatched report.
Snap a photo or upload a screenshot/PDF of the certificate — the AI reads it directly.
Everything you need for peptide research
Price Comparison
Compare prices across 62 vendors on one consistent $/10mg basis. See listing status and direct product links in one table.
AI Research Assistant
Explore mechanisms, published evidence, study limitations, interactions, vendors, and prices. The assistant does not provide dosing or administration guidance.
Research Tracking
Save compounds, record research notes, and review your history. Set price alerts for compounds you're tracking.
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 rate them on a published quality 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). A named, batch-linked, publicly available COA is the strongest trust signal in this market and accounts for 40% of our quality rating.
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 rankings are determined solely by our published quality 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.
Can I trust vendors with high quality scores?
A high score means the vendor passes our rubric checks on verifiable evidence (named lab, public COAs, physical address, consistent reviews). It's the best information we can produce, but it's not a guarantee. Always verify batch COAs yourself before a large order, and never skip vendor research — especially for newer or thinly-reviewed vendors.
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