LL-37 Purity: 156 Lab Tests Across 107 Vendors

159 studies on LL-37 curated from PubMed, ClinicalTrials.gov, and EuropePMC. Updated daily.

We tested 156 LL-37 batches across 107 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 →

99.59%
Avg purity
156
Batches tested
107
Manufacturers
1
Underdosed >10%
ManufacturerBatchesAvg purity
Peptaris 8 99.82% View COA →
Simple Peptide 7 99.78% View COA →
Alpha & Omega 7 99.75% View COA →
Protide Health 5 99.81% View COA →
Unknown vendor (review) 5 99.8% View COA →
Peptide Tech 4 99.76% View COA →
Planet Peptide 3 99.81% View COA →
JT's Biocore LLC 3 99.45% View COA →

Recent certificates: #28601 (99.68%) · #32828 (99.94%) · #44809 (99.93%) · #40899 (99.88%) · #50946 (99.76%) · #45608 (99.83%)

Vendors who tested LL-37

Manufacturers with published third-party certificates of analysis for LL-37. Open a vendor to see every batch we've verified.

Peptaris 8 COAs · 99.8% avg Simple Peptide 7 COAs · 99.8% avg Alpha & Omega 7 COAs · 99.7% avg Protide Health 5 COAs · 99.8% avg Peptide Tech 4 COAs · 99.8% avg Planet Peptide 3 COAs · 99.8% avg JT's Biocore LLC 3 COAs · 99.5% avg Real Peptides 3 COAs · 95.5% avg Modern Aminos 2 COAs · 99.9% avg Peptira LLC 2 COAs · 99.9% avg Pure Peptide Labs LLC 2 COAs · 99.9% avg Centre Research 2 COAs · 99.8% avg

Research tools

Free, no account — handy when you're working with LL-37.

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