The Peptide Index™
13 companies evaluated using 20 samples the Institute purchased anonymously and sent for independent laboratory analysis. Ranked by Index Score™.
Ranked #1 of 13
Research-compound supplier with published third-party COAs and consistent independent testing performance.
| Rank | Company | Index Score™ | Purity & Testing | Product Accuracy | Transparency | Fulfillment | Customer Experience | Value | Samples |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Apex Peptides Exceptional | 91 | 99 | 90 | 90 | 89 | 84 | 81 | 1 |
| 2 | Research Peptides Co. Exceptional | 90 | 98 | 91 | 84 | 86 | 90 | 88 | 2 |
| 3 | Halcyon Biosciences Excellent | 89 | 99 | 86 | 90 | 87 | 86 | 78 | 1 |
| 4 | PureSci Labs Excellent | 89 | 99 | 92 | 95 | 76 | 80 | 78 | 1 |
| 5 | Quantum Peptide Group Excellent | 89 | 98 | 86 | 85 | 94 | 85 | 77 | 2 |
| 6 | Lumen Research Supply Excellent | 89 | 99 | 92 | 80 | 77 | 91 | 91 | 2 |
| 7 | BioRegen Research Excellent | 87 | 99 | 89 | 82 | 85 | 78 | 76 | 2 |
| 8 | Cardinal Metabolic Clinic Excellent | 87 | 98 | 84 | 88 | 78 | 89 | 75 | 3 |
| 9 | Atlas Peptide Labs Excellent | 85 | 99 | 79 | 72 | 90 | 83 | 82 | 1 |
| 10 | NextGen Peptides Excellent | 85 | 91 | 80 | 80 | 90 | 86 | 84 | 1 |
| 11 | Northwind Telehealth Excellent | 84 | 81 | 82 | 90 | 83 | 92 | 72 | 1 |
| 12 | Sterling Compound Co. Good | 74 | 91 | 67 | 66 | 76 | 62 | 68 | 2 |
| 13 | Vector Peptide Supply Good | 70 | 89 | 66 | 52 | 74 | 68 | 66 | 1 |
Scores combine six weighted dimensions: Purity & Testing (25%), Product Accuracy (20%), Transparency (20%), Fulfillment (15%), Customer Experience (10%), Value (10%). A company appears here only if the Institute has independently tested Tirzepatide purchased from it.
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