What we score, and why
Every vendor review on PeptideCrib is scored by a named editor across six published criteria, each from 0 to 5:
- Product range — breadth and depth of the catalog relevant to researchers.
- Pricing — how prices compare to the market for equivalent products, including bundle value.
- Shipping policy — clarity, speed claims, packaging standards, and regions served.
- Payment options — variety and reliability of accepted payment methods.
- Third-party testing / COA transparency — whether the vendor issues independent Certificates of Analysis, their availability, and whether they are current. This is one of our most heavily weighted criteria because it is the strongest indicator of quality in this market.
- Website experience — findability of critical information, checkout clarity, and support access.
How a review is produced
- The research is prepared first, then the editor verifies each claim on the live website of the company and in public sources.
- The editor himself inputs the six sub-scores – scores will never be machine generated.
- The review gets published using the name of the editor and is linked to the author page and LinkedIn page of the editor.
- Changes made to the content after the date of publishing are recorded in the changelog of the review.
Fairness
The reader rating is collected separately from the editor’s assessment and published next to it — never added to it. Every review features the vendor’s response space where the company being reviewed can respond with an official statement, which will be published without changes. We do not get any compensation for ratings or ranking.