The Peptide Index™

Best Thymosin Beta-4 Fragment companies

2 companies evaluated using 2 samples the Institute purchased anonymously and sent for independent laboratory analysis. Ranked by Index Score™.

Updated 2 samples tested How we rank →
Institute
Top Rated Thymosin Beta-4 Fragment

Ranked #1 of 2

Atlas Peptide Labs

A high-volume supplier with broad catalogue coverage and consistent fulfillment, though documentation lags its operational strength.

  • 97% average purity across 1 sample
  • 98.4% average content accuracy vs. label
  • Most recent sample tested May 16, 2025
View full profile Read the lab report
85 Excellent 80–89

Full Thymosin Beta-4 Fragment rankings

Scoring methodology →
Rank Company Index Score™ Purity & TestingProduct AccuracyTransparencyFulfillmentCustomer ExperienceValue Samples
1 Atlas Peptide Labs Excellent 85 997972908382 1
2 Sterling Compound Co. Good 74 916766766268 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 Thymosin Beta-4 Fragment purchased from it.

Thymosin Beta-4 Fragment 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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