Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.
Best PT-141 Vendors of 2026
Ranked by Price, Purity, and Reputation
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Quick Comparison
1Ascension Peptides
10/10$24.00$48.00
10mg$2.40/mgCOA2EZ Peptides
9.9/10$31.50$35.00
10mg$3.15/mgCOA3Ion Peptide
9.6/10$31.45$37.00
10mg$3.15/mgCOA4Dynamic Peptide
9/10$44.99$49.99
10mg$4.50/mgCOA5BioLongevity Labs
8.9/10$47.97
5mg$9.59/mgCOA6Penguin Peptides
8.8/10$55.00
10mg$5.50/mgCOA| Rank | Vendor | Price | Amount | $/mg | COA | Score | |
|---|---|---|---|---|---|---|---|
| 1 | Ascension Peptides | $24.00$48.00 | 10mg | $2.40/mg | Yes | 10/10 | View50% OFF |
| 2 | EZ Peptides | $31.50$35.00 | 10mg | $3.15/mg | Yes | 9.9/10 | View10% OFF |
| 3 | Ion Peptide | $31.45$37.00 | 10mg | $3.15/mg | Yes | 9.6/10 | View15% OFF |
| 4 | Dynamic Peptide | $44.99$49.99 | 10mg | $4.50/mg | Yes | 9/10 | View10% OFF |
| 5 | BioLongevity Labs | $47.97 | 5mg | $9.59/mg | Yes | 8.9/10 | |
| 6 | Penguin Peptides | $55.00 | 10mg | $5.50/mg | Yes | 8.8/10 |
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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.