Open data

Everything behind our tables, free to download. Journalists, researchers and other sites are welcome to reuse it under CC BY 4.0: just credit us and link to the source page.

Coverage

• 205 vendors in the registry; 112 publish a product feed we can read.
• 4,740 price listings, of which 4,082 are vials with a reliable size and enter comparisons, covering 82 peptides.
• 38 dated, sourced alerts about closures, raids, warning letters, lawsuits and domain changes.

Price index fields

vendor_slug

Our ID for the vendor; matches /vendors/<vendor_slug>/

peptide_slug

Our ID for the peptide; matches /prices/<peptide_slug>/

product_title, variant_title

The vendor's own product and variant names

mg_per_unit, units

Labeled milligrams per vial and number of vials in the listing

price, currency

Listed price, excluding shipping, tax and discount codes

usd_per_mg

price ÷ (mg_per_unit × units), for USD listings

in_stock

Stock flag from the feed (true, false or empty if not stated)

form

vial, capsule, liquid or powder; only vials enter comparisons

parse_confidence

high, medium or low; low-confidence rows are excluded from comparisons

url, fetched, source

Product page, fetch time (UTC) and which public feed it came from

Vendor registry fields

slug, name, domain, status

Identity and current status (live, blocked, down, redirects, closed)

registered, first_archived

Domain registration date (RDAP) and first Internet Archive capture

coa_status, coa_labs

public_batch, public_generic, on_request, none_found or unknown, and labs named

ships_to, payment_methods

As stated on the vendor's own pages

transparency_score, checks_completed

Score out of 100 and how many of the six checks could be completed (see methodology)

platform, checked

Shop platform and date of our last check

Using the files

The files are plain static downloads with no key or sign-up, and they're served with Access-Control-Allow-Origin: *, so a web page or notebook can fetch them directly. Please cache them: they change at most once a day. For example:

curl -O https://peptidereferee.com/data/prices.csv

How the data is collected and what it can't tell you: methodology and comparing prices per mg. Found an error? Email [email protected]; fixes are logged on our corrections page.

How to cite

Credit "Peptide Referee" with a link to the page the numbers came from (for example a price page or a report). Need a custom cut of the data for a story or study? Email [email protected].

Peptide Referee. (2026). Research peptide price index and vendor registry. Retrieved Oct 15, 2026, from https://peptidereferee.com/data/

<a href="https://peptidereferee.com/data/">Research peptide price index and vendor registry</a> (Peptide Referee)