Where to Buy LL-37
Explore trusted research peptide suppliers selling LL-37 — with available third-party COAs, lab sources, and shipping data. No paid rankings.
About LL-37
LL-37 is a 37-amino acid human antimicrobial peptide belonging to the cathelicidin family, encoded by the CAMP gene. It is naturally expressed in neutrophils, epithelial cells, and macrophages. In research, LL-37 is studied for its direct antimicrobial activity (bactericidal against gram-positive and gram-negative bacteria), wound healing, and immune modulation properties.
LL-37 is sold worldwide as a research-use-only (RUO) compound. Because of its antimicrobial nature, endotoxin (LAL) testing is particularly relevant alongside standard HPLC purity and mass spectrometry — contamination can confound antimicrobial research outcomes. Third-party COA coverage is the key differentiator between suppliers.
LL-37 Suppliers
Each card shows what the supplier actually publishes — lab data, COA source, and how long shipping takes.
Uther
Particle PeptidesLL-37 vs BPC-157 vs KPV
Three peptides studied in wound healing, antimicrobial defense, and tissue-protection research:
- Origin — LL-37 is a naturally occurring human cathelicidin; BPC-157 is a synthetic gastric pentadecapeptide; KPV is a tripeptide derived from the C-terminal of alpha-MSH
- Primary mechanism — LL-37: direct antimicrobial disruption of bacterial membranes + immunomodulation; BPC-157: systemic tissue repair, gut lining, tendon/ligament; KPV: anti-inflammatory via NF-κB inhibition, particularly studied in gut models
- Endotoxin testing relevance — Especially important for LL-37 and KPV research, where bacterial contamination could confound outcomes; Particle Peptides includes endotoxin testing in their COA panel
- Research stage — BPC-157 has the broadest preclinical literature of the three; LL-37 has substantial in vitro and some in vivo data; KPV is more recent with growing interest in gut research
Frequently Asked Questions
What is LL-37?
LL-37 is a 37-amino acid human antimicrobial peptide belonging to the cathelicidin family. It is encoded by the CAMP gene and naturally expressed in neutrophils, epithelial cells, and macrophages. In research it is studied for antimicrobial, wound-healing, and immunomodulatory properties.
Where can I buy LL-37?
LL-37 is sold by research peptide suppliers worldwide. The suppliers above ship to the United States, EU, UK, and other regions with available lab data and certificates of analysis.
How is LL-37 different from BPC-157?
Both are studied for wound healing and tissue repair endpoints, but through different mechanisms. LL-37 is a naturally occurring human antimicrobial peptide with direct bactericidal activity and immunomodulatory effects. BPC-157 is a synthetic gastric pentadecapeptide with systemic tissue repair and gut-protective properties. They have largely non-overlapping research profiles.
What should I look for in an LL-37 supplier?
Look for third-party COAs with HPLC purity and mass spectrometry sequence confirmation. At 37 amino acids, sequence verification is important. Endotoxin (LAL) testing is also worth checking given LL-37's antimicrobial nature — endotoxin contamination can confound research outcomes.