How we verify, and what we have not yet tested
Peptide Scanner reports on suppliers with the method and restraint of a testing body. These are the shared patterns that carry that credibility — and that state, plainly, the limits of what we currently know.
We only show as much confidence as our evidence supports. If we have not tested something, we say so.
Why a score can't pass 60 until we test it
The 0–100 PSV Trust Score is built from four weighted pillars. A supplier cannot pass 60 until we have run our own independent lab test — and the score states that cap out loud, rather than hiding a ceiling.
The lab-tested example is illustrative of the model. Our independent testing programme is rolling out — no supplier in the catalog currently carries a completed PSV lab result, so every tracked supplier is shown at the honest, capped state today.
How the PSV Trust Score is calculated
The score is four pillars that add to 100. Lab Verification stays locked until we run our own assay — which is why no supplier can pass 60 yet. The other three pillars are computed from public signals we can evidence today.
Our own independent lab test of a real batch (identity + purity). Locked at 0 until we test the supplier — this is the 60-point cap.
Third-party review platforms (Trustpilot, reviews.io). More reviews and a higher rating score higher; suppliers with very few reviews are capped, so a handful of five-stars can't dominate.
What the wider internet — and our own users — actually say about a supplier. Split in two:
Certificates of analysis, scored on three things — because a single certificate on a single product says nothing about the rest of a supplier's range:
A supplier that independently tests its whole range, recently, earns the full 15 — and outscores one flashing a single old certificate, however prestigious the lab.
We publish the pillars and their weights in full. The exact review-count thresholds are kept general on purpose, so the score reflects genuine reputation rather than something a supplier can manufacture.
How suppliers are ranked on a results page
The default “Best match” order is trust-first, not cheapest-first. It combines how much we trust a supplier with how fairly it is priced for that specific peptide.
The PSV Trust Score above. Because a flagged supplier scores low on Community, it sinks on its own — the weighting is the guard.
Price per milligram, ranked against the other suppliers of the same peptide — cheapest ranks highest, most expensive lowest.
Price freshness is not a ranking factor — every listing is re-checked weekly, so freshness carries no signal and its weight is folded into trust. If you only care about price, the Cheapest per mg sort is always one click away.
The three badges and what each means
A badge is a claim, so it carries how the claim was earned. Verified states our test date; Tracked says plainly that monitoring is not testing; Flagged is reserved for evidenced risk.
Reserved for documented signals (counterfeit or non-delivery reports). Never applied speculatively.
We keep the supplier's claim separate from our test
A self-reported certificate and an independent assay are different kinds of evidence, so they sit in separate columns. When we have not tested, our side says so — calmly, as a queue position, not a blank.
What our test does — and does not — prove
A measured limitation reads as more authoritative than a confident overreach. Every formal result carries a plain-language note of its boundaries.
We have not independently tested this supplier. We can report what is publicly observable — pricing, listing history and supplier-provided documents — but no PSV lab result exists yet. Absence of a result is not a negative finding.
A completed test measures identity and purity of the active peptide for one batch on one date. It is not a guarantee of future batches, nor a claim about safety or clinical effect.