Ion Peptide vs PX1 Research: COA & Testing Comparison (2026)
Ion Peptide is Grade S. PX1 Research is Grade B. The published rubric lists S above B. These grades describe the public record checked on October 16, 2026. They are not a guarantee of quality, purity, safety, or outcomes.
| Public record | Ion Peptide | PX1 Research |
|---|---|---|
| Grade | Grade S | Grade B |
| Signal | Independently verified. Finnrick: 5/5 classifiable tests passed, rating 83%, #24 of 482 vendors, latest test 14 Oct 2026 (Independent) | Supplier-stated. Lot-lookup COA archive; claims 8 assays per batch (Supplier-stated) |
| Limitation | Independent data covers one compound only (retatrutide, n=5); Freedom Diagnostics named only by the supplier | Lab not named; no independent dataset found |
| COA availability | Supplier-stated. A public lab-results library can be searched by product or batch number. The page says that if a report is not listed, support can be contacted with the product name and batch number. Source | Supplier-stated. A public COA archive offers lot lookup and says eight assays per batch are run by independent accredited laboratories. The page does not name the laboratory. The BPC-157 page says each lot is released with a published, lot-matched certificate. Source |
| Named lab | Supplier-stated. The FAQ says every batch is verified through accredited independent laboratories and that testing is conducted by Freedom Diagnostics in Franklin, Tennessee. Source | not publicly verified |
| Code | No code published | No code published |
The ranking is not a quality guarantee. One strong certificate of analysis does not validate the whole catalog. Verify each batch.