PE-22-28 Purity: 10 Lab Tests Across 7 Vendors

1 study on PE-22-28 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 10 PE-22-28 batches across 7 manufacturers

Independent certificate-of-analysis evidence from third-party labs — the data behind the studies. Updated as new COAs are verified. Read the full grey-market analysis →

99.69%
Avg purity
10
Batches tested
7
Manufacturers
ManufacturerBatchesAvg purity
(unknown) 2 99.88% View COA →
Qingdao Sigma Chemical 2 99.71% View COA →
Peptide Gurus 2 99.43% View COA →

Recent certificates: #12022 (99.624%) · #7300 (99.316%) · #19895 (99.612%) · #19116 (99.861%) · #19117 (99.861%) · #18691 (99.898%)

Vendors who tested PE-22-28

Manufacturers with published third-party certificates of analysis for PE-22-28. Open a vendor to see every batch we've verified.

QSC 2 COAs · 99.7% avg Peptide Gurus 2 COAs · 99.4% avg XYX 1 COA · 99.9% avg cocerpeptides.com 1 COA · 99.9% avg Xcel Peptides 1 COA · 99.6% avg PEPTIDES WORLD 1 COA · 99.5% avg

Research tools

Free, no account — handy when you're working with PE-22-28.

Reconstitution calculator Bac water, concentration & insulin-unit math Verify a COA Look up a report number against our corpus