LL-37: Research Summary and How to Judge a Supplier
Human cathelicidin antimicrobial peptide with a substantial immunology literature. This profile sets out what is actually published, what a 5mg vial should cost, and the specific documentation to ask for before ordering LL-37 from any research supplier.
5mg
Typical vial
$30
Lowest tracked
$43
Median price
44
Vendors listing
What LL-37 is
LL-37 is the only human cathelicidin antimicrobial peptide, with a large literature covering direct antimicrobial activity, wound healing and immune modulation, alongside less flattering work on its role in inflammatory skin disease.
At 37 residues it is long by research-peptide standards, and synthesis quality varies noticeably between suppliers as a result.
What the evidence base looks like
There is a real published record behind this compound, spread across animal work and a smaller amount of human data, but not enough controlled evidence to support confident claims.
Our library records roughly 130 relevant publications for LL-37 and grades the evidence as moderate. That grade describes the weight of research, not a judgement about safety or effect, and it is reviewed as new work is published.
Supplier quality: what to check on LL-37
Long cationic peptides bind readily to glass and plastic, so vial and handling specification affects how much active material you actually recover.
The practical checklist is the same on every product but weighted differently here: a batch-matched certificate of analysis, an identity method appropriate to this molecule rather than purity alone, clear peptide content per 5mg vial, and a supplier that will answer a technical question before taking payment.
Typical UK pricing
The lowest price we currently track for a 5mg vial is £29.95, against a market median nearer £43. Compare on price per milligram rather than per vial, because vial sizes across suppliers are rarely identical.
A listing well below the tracked low is worth investigating rather than celebrating. On this compound the cost of doing it properly is largely analytical, and that is the first thing an unusually cheap supplier stops paying for.
Frequently asked
Is LL-37 approved for human use?
No. Everything listed here is supplied for laboratory research use only, and nothing on this page is medical advice.
How much should LL-37 cost?
Tracked UK prices start around £29.95 for a 5mg vial, with the market median closer to £43.
What is the single most useful check on LL-37?
Long cationic peptides bind readily to glass and plastic, so vial and handling specification affects how much active material you actually recover.
Search focus for this profile
ll-37 — Tracked monthly searches, difficulty Monitored. Source: Semrush (UK database).
Supporting terms covered: ll-37 review, buy ll-37 uk, ll-37 price, best ll-37 supplier.
Everything below describes published research and market data. Nothing here is medical advice, and none of these compounds are sold or supplied by CheckALab.
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