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PE-22-28
Best PE-22-28 Vendors of 2026
Ranked by Price, Purity, and Reputation
3 vendors comparedfrom $2.30/mgCOA-verified sources only
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Quick Comparison
1Ion PeptideCOA
10/1010mg$4.90/mg
2Mile High CompoundsCOA
9.5/1010mg$5.00/mg
3Limitless BiotechCOA
9/1020mg$2.30/mg
| Rank | Vendor | COA | Score | Doses |
|---|---|---|---|---|
| 1 | Ion Peptide | Yes | 10/10 | |
| 2 | Mile High Compounds | Yes | 9.5/10 | |
| 3 | Limitless Biotech | Yes | 9/10 |
How We Score Vendors
Our scoring is based on three weighted factors:
Price Competitiveness (40%)
Normalized to cost per milligram for fair comparisons across vial sizes.
COA Availability (30%)
Third-party lab testing confirming purity, identity, and absence of contaminants.
Vendor Reputation (30%)
Community feedback, shipping reliability, customer service, and business track record.