Peptide Crafters
peptidecrafters.com
Four-panel-tested catalog with the strongest testing transparency in the tracked set.
Open vendor profile →§ Vendor comparison
Peptide Crafters vs QSC Peptides
Side-by-side trust evidence: testing methods, lab disclosure, latest COA date, OpenAssay status, and operational state. Same 7-category rubric we publish on every vendor page.
A·88
QSC Peptides
qsc-usa.com
Eight-country domestic warehousing with COAs published per batch.
Open vendor profile →Side-by-side rubric
Each cell reflects what the vendor publicly publishes today. "Not disclosed" means the vendor doesn't publish the field, not that the field is failing.
| Field | Peptide Crafters | QSC Peptides |
|---|---|---|
| Testing score | 7.0 / 7 | 6.5 / 7 |
| Trust score | [object Object] / 100 | [object Object] / 100 |
| Operational state | operational | operational |
| Testing methods | HPLC purity · Mass spec identity · USP <85> endotoxin · USP <71> sterility | HPLC purity · Mass spec identity |
| Independent lab | Not disclosed | Janoshik Analytical |
| Latest | Not disclosed | Not disclosed |
| — pending | — pending | |
| Country | US | US |
| Founded | 2022 | 2023 |
| Discount code | PC10 | QSC10 |
See /methodology for the rubric definitions and how each field is scored.