The Peptide Index™

Best KPV companies

3 companies evaluated using 4 samples the Institute purchased anonymously and sent for independent laboratory analysis. Ranked by Index Score™.

Updated 4 samples tested How we rank →
Institute
Top Rated KPV

Ranked #1 of 3

Halcyon Biosciences

Publishes batch-specific certificates of analysis and names its manufacturing partners, the documentation posture we most often find correlates with test performance.

  • 94.3% average purity across 1 sample
  • 100.5% average content accuracy vs. label
  • Most recent sample tested Jan 14, 2026
View full profile Read the lab report
89 Excellent 80–89

Full KPV rankings

Scoring methodology →
Rank Company Index Score™ Purity & TestingProduct AccuracyTransparencyFulfillmentCustomer ExperienceValue Samples
1 Halcyon Biosciences Excellent 89 998690878678 1
2 NextGen Peptides Excellent 85 918080908684 2
3 Helix Research Supply Good 79 877368848278 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 KPV purchased from it.

KPV researchEvidence, mechanism, dosage research and studies Testing databaseEvery published lab report, with full methodology All rankingsOverall and category leaders across the Index

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