Top Peptide Companies
Our flagship ranking of peptide research-compound suppliers, evaluated across seven weighted dimensions including independent testing performance, transparency, and fulfillment.
| Rank | Company | Tier | Index Score™ | Trend |
|---|---|---|---|---|
| 1 — rank 1 | Apex Peptides #1 Overall | Exceptional | 92/100 Apex Peptides: Index Score 92 out of 100, Exceptional | no change |
| 2 — rank 2 | Research Peptides Co. Top Quality | Excellent | 89/100 Research Peptides Co.: Index Score 89 out of 100, Excellent | no change |
| 3 — rank 3 | PureSci Labs Most Transparent | Excellent | 87/100 PureSci Labs: Index Score 87 out of 100, Excellent | no change |
| 4 | Highest single purity result of the 2026 cycle. | Excellent | 85/100 BioRegen Research: Index Score 85 out of 100, Excellent | 2 moved up |
| 5 | Quantity discrepancy under review. | Excellent | 83/100 NextGen Peptides: Index Score 83 out of 100, Excellent | 1 moved down |
| 6 | Excellent | 81/100 Northstar Research Labs: Index Score 81 out of 100, Excellent | 1 moved down | |
| 7 | Excellent | 80/100 Meridian Peptide Research: Index Score 80 out of 100, Excellent | 1 moved up | |
| 8 | Good | 76/100 Helix Research Supply: Index Score 76 out of 100, Good | 1 moved down | |
| 9 | Good | 74/100 Novum BioResearch: Index Score 74 out of 100, Good | 1 moved up | |
| 10 | Fair | 68/100 Sterling Compound Co.: Index Score 68 out of 100, Fair | 1 moved down | |
| 11 | Fair | 66/100 Vector Peptide Supply: Index Score 66 out of 100, Fair | no change | |
| 12 | Under active review after failed verification. | Low | 41/100 Cascade Research Group: Index Score 41 out of 100, Low | no change |