Disclosure: We earn a commission from vendors on this page. Rankings are based on objective criteria including price, COA availability, and reputation.
Best Klow Blend Vendors of 2026
Ranked by Price, Purity, and Reputation
Four peptides targeting collagen, inflammation, tissue repair, and gut healing in one injection.
What's in the Klow Blend?
Vendor Comparison
1BioLongevity Labs
10/10$0.0080mg$0.00/mgCOA
2EZ Peptides
9.9/10$88.0080mg$0.55/mgCOA
3Ascension Peptides
9.8/10$135.0080mg$0.84/mgCOA
4Orbitrex Peptides
9/10$119.9980mg$0.75/mgCOA
5Penguin Peptides
8.9/10$134.0080mg$0.84/mgCOA
6Certified Pep
8.8/10$158.0080mg$0.99/mgCOA
| Rank | Vendor | Price | Size | $/mg | COA | Score | |
|---|---|---|---|---|---|---|---|
| 1 | BioLongevity Labs | $0.00 | 80mg | $0.00/mg | Yes | 10/10 | View |
| 2 | EZ Peptides | $88.00 | 80mg | $0.55/mg | Yes | 9.9/10 | View |
| 3 | Ascension Peptides | $135.00 | 80mg | $0.84/mg | Yes | 9.8/10 | View |
| 4 | Orbitrex Peptides | $119.99 | 80mg | $0.75/mg | Yes | 9/10 | View |
| 5 | Penguin Peptides | $134.00 | 80mg | $0.84/mg | Yes | 8.9/10 | View |
| 6 | Certified Pep | $158.00 | 80mg | $0.99/mg | Yes | 8.8/10 | View |
How We Score Blend Vendors
Our scoring is based on two weighted factors:
Price Competitiveness (50%)
Normalized to total cost per milligram across all peptides in the blend.
COA Availability (50%)
Third-party lab testing confirming purity of each component in the blend.
Buy Individual Peptides
Prefer to source each peptide separately? Compare vendors for each component: