Research Overview

LL-37 is the sole human cathelicidin-derived peptide, a 37-residue fragment released from the hCAP18 precursor. Research has examined its antimicrobial activity against bacterial membranes in vitro alongside its role in innate immune signalling, chemotaxis and wound-model biology. It is widely used as a reference peptide in host-defence and membrane-interaction studies.

Quality & Testing

Every LL-37 batch is independently verified by an accredited third-party laboratory using HPLC (High-Performance Liquid Chromatography) and mass spectrometry to confirm both purity and molecular identity. Every order number is tracked internally against the supply-chain testing for the batches it shipped from — we don’t publish batch documents, which are routinely copied by other vendors. For testing information relating to your order, contact us with your order number.

Handling & Storage

LL-37 is supplied as a lyophilized (freeze-dried) powder. Store at -20°C and protect from light and moisture prior to reconstitution. For laboratory reconstitution volume and concentration calculations, see our Reconstitution Calculator.

Research Use Only. LL-37 is sold exclusively for in-vitro laboratory and scientific research. It is not intended for human or veterinary use, is not a drug, food, or cosmetic, and has not been evaluated by Health Canada or the FDA.