EZ Peptides

Our Verdict

EZ Peptides posts third-party lab results confirmed through Finnrick across six tested products, and a physical US address is on file. Most purity results are clean — tirzepatide and GHK-Cu batches run 99.4–99.9%. The exception is a retatrutide batch (EZP-RET061209225-12) that came back at 93.2% — below the threshold where we start flagging product quality concerns. Notably, a second retatrutide batch tested the same day came back at 99.4%, which suggests a batch-specific problem rather than a systemic one, but neither result has been publicly addressed by the vendor. Ownership is not disclosed. The testing infrastructure is real and batch-traceable; the 93.2% outlier and the missing ownership disclosure are the two unresolved gaps before this vendor warrants a higher placement.

Latest Lab Results

This vendor has demonstrated strong historical performance, transparency, and testing practices. However, the most recently tested batch of Retatrutide achieved only 93.2% purity — below the 95% standard expected from top-tier vendors. The overall score reflects the vendor's full track record, not any single result.

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