Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
The only human cathelicidin antimicrobial peptide (37 aa, starting with two leucines) — a dual-role molecule: broad-spectrum antimicrobial and immunomodulator, but also an autoantigen implicated in psoriasis, rosacea, and lupus. Research-use only; not FDA-approved.
0 of 10 vendors lab-verified
Verified purity per dollar — the cheapest that's actually been tested
vial · 10mg· simplepeptide.com· price updated today
$54.00✓ $5.40/mg
single-vial price — packs may be lower
vial · 5mg· orbitrexpeptide.is· price updated today
$39.99✓ $8.00/mg
32% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· ionpeptide.com· price updated today
$45.00✓ $9.00/mg
40% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· peptidology.co· price updated today
$45.00✓ $9.00/mg
40% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· texpeptide.com· price updated today
$40.00✓ $8.00/mg
33% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· ascensionpeptides.com· price updated today
$119.99−26%
$89.00✓ $8.90/mg
39% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· verifiedpeptides.com· price updated today
$65.70✓ $13.14/mg
59% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· skyepeptides.com· price updated today
$74.00✓ $14.80/mg
64% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· realpeptides.co· price updated today
$80.00✓ $16.00/mg
66% more per mg vs cheapest
single-vial price — packs may be lower
vial · 5mg· biolongevitylabs.com· price updated today
$94.97✓ $18.99/mg
72% more per mg vs cheapest
single-vial price — packs may be lower
vial · 10mg· peptidetech.is· price updated today
$49.99$5.00/mg
single-vial price — packs may be lower
18 vendors not shown — trust grade below C, or not enough verified COA data yet. We only list sources with a C grade or better.
Best price trend
Lowest $/mg for LL-37 · verified listings only
$5.40/mg
▲ 8% over 90d
Peptide Tech has the lowest single-vial LL-37 price at $5.00/mg among 12 COA-verified vendors on Disclosed Labs. Bulk or multi-vial deals may be lower. That's 74% less per mg than the most expensive option.
What is the price range for LL-37?
Research-grade LL-37 ranges from $5.00/mg to $18.99/mg across 11 verified sources, a 74% spread per mg.
How are LL-37 prices verified on Disclosed Labs?
Every listed vendor holds a Grade C or better trust score, computed independently from lab Certificates of Analysis — not from payments or sponsorships. Prices are scraped and fact-checked daily. Vendors cannot pay to improve their ranking.
Check formulation: Lyophilized powder requires reconstitution before use. Pre-mixed solutions are more convenient but may have a shorter shelf life and higher prices.
Compare per-mg cost: Different strengths and quantities make direct price comparison difficult. Calculate the per-milligram cost to find the true best value.
Verify COAs: Look for vendors that publish per-batch Certificates of Analysis from named, accredited labs. Use the Full safety panel filter to require endotoxin, sterility, and heavy-metals testing on the current batch — not just HPLC purity.
LL-37 was characterized in the mid-1990s as the processed antimicrobial product of hCAP-18 (Gudmundsson et al., 1996). Dürr et al. (2006, Biochim Biophys Acta, PMID 16716248) provided a foundational review of its structure and activity as the sole human cathelicidin. Overhage et al. (2008, Infection and Immunity, PMID 18591225) showed LL-37 prevents Pseudomonas aeruginosa biofilm formation at 0.5 µg/mL — far below its MIC. A randomized, placebo-controlled Phase 1/2 trial (Grönberg et al., 2014, Wound Repair and Regeneration, PMID 25041740) found topical LL-37 safely accelerated healing of hard-to-heal venous leg ulcers at low doses. Its dual role in autoimmunity is well established: Lande et al. (2014, Nature Communications, PMID 25470744) identified LL-37 as a T-cell autoantigen in two-thirds of moderate-to-severe plaque psoriasis patients. No FDA approval exists for any indication. Injectable grey-market protocols for Lyme, biofilm, or mold illness lack controlled clinical evidence and carry theoretical autoimmune risk given LL-37's role in psoriasis, lupus, and rosacea pathogenesis.
This platform provides informational tools only, not medical advice.
LL-37, the only human member of the cathelicidin family of antimicrobial peptides (Dürr et al., 2006)
2006
Human host defense peptide LL-37 prevents bacterial biofilm formation (Overhage et al., 2008, Infect Immun)
2008
Treatment with LL-37 is safe and effective in enhancing healing of hard-to-heal venous leg ulcers: a randomized, placebo-controlled clinical trial (Grönberg et al., 2014)
Prices verified as of July 2026. Actual prices may vary. For research use only.
Single-vial list prices by default for a fair head-to-head — switch to Multi-vial / bulk for pack pricing. Estimates only; verify at vendor before purchase. For research use only. Not medical advice.
2014
Disclosed Labs