How Matching Works
The matching flow is a two-stage scoring engine — a hard safety filter followed by a relevance-ranked provider score. Your answers determine both which peptides are eligible and how providers are weighted.
Matching pipeline
5 stagesMatch found
Providers shown, sorted by relevance score
No strong match
Nothing returned rather than weak results
Why we return “no match”
If no providers meet the quality threshold for your criteria, PeptideBase returns nothing rather than surfacing weak recommendations. We'd rather show zero results than mislead you with providers that don't genuinely fit your research goals.
Match results are educational outputs — not treatment recommendations, protocols, or clinical advice. They are a structured starting point for your own research.
What “Verified” Means
A provider marked Verified has been manually reviewed by the PeptideBase team. The signal is intentionally narrow — it confirms data accuracy, not quality or safety.
Verified confirms
- Real, operating business or practice
- Listed peptides match public provider information
- Listing data accurate at time of review
Does NOT mean
- Clinical practices have been evaluated
- Product quality has been assessed
- Regulatory compliance has been confirmed
- Safety record has been reviewed
Providers without the badge have been added to the directory but haven't completed the review process. Their listings may be less complete or may contain errors.
How Ratings Are Sourced
Ratings shown on PeptideBase come from third-party platforms. We pass them through unchanged — the source is always shown alongside the score.
PeptideBase
no adjustment
Provider Listing
source shown alongside rating
We don't adjust, normalise, or influence ratings. The source is always shown.
A provider without a rating hasn't had a third-party rating sourced yet — it doesn't indicate a poor provider. Both the star rating and review volume contribute to directory ranking, but verification status and listing completeness carry more weight overall.