Methodology

Where grades come from

Every grade and score on this site is derived from one of two third-party labs:

• finnrick.com publishes letter grades (A through F, plus X for unrated) and 0–10 purity scores for ~200 peptide vendors across ~15 peptides. We use finnrick's data verbatim.
• Janoshik Analytical publishes certificates of analysis (COAs) for individual product batches. We link to these COAs from the relevant vendor pages.

We do not run our own lab tests. We do not generate grades. When finnrick or Janoshik publishes updated data, we refresh.

Launch inclusion criteria

We list every vendor finnrick has tested. But for a vendor to receive a public "Visit store" link, it must meet all of the following:

1. Verifiable public website or ordering page. Telegram-only, Discord-only, or WhatsApp-only suppliers do not qualify.
2. Strong identity evidence.Examples: exact brand-to-domain match, COA "Client" field matching the finnrick vendor name, active product catalog, registered business listing.
3. No credible scam allegations. Independent community reports of fraud (e.g. confirmed non-delivery threads) block the outbound link even if the URL is correct.
4. Public storefront sales channel. Login walls and contact-form-only catalogs are tracked but not first-class.
5. Consumer-facing operation. Chinese B2B wholesalers and Alibaba-only suppliers are tracked but not listed for our audience.

If a vendor fails any of these, the row stays in the database but the "Visit store" link is hidden.

Quality flags

When a vendor has a quality flag set, you'll see an amber warning banner on their vendor page and the "Visit store" link is hidden. This means we found enough independent customer evidence that we are not comfortable driving traffic until the situation is verified or refuted.

Quality flags are independent of the lab grade. A vendor can have an A grade and still be flagged — the grade reflects product purity in lab tests, the flag reflects shipping or service problems reported by customers.

What verification status values mean

The status shown next to a vendor name is one of:

• verified — identity, public catalog, and launch criteria all confirmed.
• flagged — quality concerns from independent sources (see Quality flags above).
• unverifiable — we could not confirm identity through any of our signals.
• channel only — exists, but sells via Telegram/Discord/WhatsApp only.
• b2b contact only — B2B operator, no retail-facing storefront.
• needs review — research pending.
• blank — not yet researched.

Why some vendors show no price

Pricing coverage is limited to the small set of vendors whose catalogs we can reliably scrape. A vendor may show "Pricing pending" for any of these reasons:

• Their catalog is behind a login wall.
• Their site blocks automated requests.
• Their product names are coded and require human decoding.
• Their site shows pricing only after contact.
• They are pre-launch with no live products.

We are expanding pricing coverage iteratively. "Pricing pending" is not a quality judgment.