The Peptide Index™

Best Sermorelin companies

4 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 Sermorelin

Ranked #1 of 4

Research Peptides Co.

Established supplier with strong purity results and improving transparency practices.

  • 98.1% average purity across 1 sample
  • 98.6% average content accuracy vs. label
  • Most recent sample tested Jan 11, 2025
View full profile Read the lab report
90 Exceptional 90–100

Full Sermorelin rankings

Scoring methodology →
Rank Company Index Score™ Purity & TestingProduct AccuracyTransparencyFulfillmentCustomer ExperienceValue Samples
1 Research Peptides Co. Exceptional 90 989184869088 1
2 NextGen Peptides Excellent 85 918080908684 1
3 Atlas Peptide Labs Excellent 85 997972908382 1
4 Cascade Research Group Below Standard 35 93138625444 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 Sermorelin purchased from it.

Sermorelin 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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