LL-37: 284 published COA source records

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

Bottom line: TitrateLab indexes 284 published LL-37 COA source records from third-party laboratories, covering 148 publicly attributable vendor identities. Across 250 records with positive numeric purity, the arithmetic mean is 99.61%. 0 records report zero purity; these remain in the record count and are excluded from the positive-purity mean. 0 positive purity results are below 90%; 2 records report measured amount more than 10% below the label. The latest recorded test date is 2026-10-14. TitrateLab did not perform these laboratory tests. Source records are not unique batches, and vendor identity does not establish manufacturing role, product safety or overall quality.

LL-37 average prices

As of 2026-10-18, vendor-blind retail asking-price averages for the US delivery market, calculated from the same in-stock exact-strength cells as the Peptide Price Index. Shipping is excluded.

Strength Average / vial Observed range / vial Average / mg Coverage
5 mg $13.00 $13.00–$13.00 $2.60 1 source · 1 offer
10 mg $19.50 $19.50–$19.50 $1.95 1 source · 1 offer

Asking prices are not manufacturing cost and do not establish product equivalence, quality, safety, or legality. View full price methodology →

LL-37: published third-party laboratory evidence

All published source records, including absent and zero purity. Matching uses a case-insensitive exact peptide token. No deduplication in the headline; vendor rankings deduplicate eligible certificates separately. The COA archive can use normalized compound names and a different measurement or duplicate policy; totals from these populations need not match.

Latest recorded test: 2026-10-14. Aggregate calculated: 2026-10-18T05:13:54.986772+00:00. Calculation time is not a laboratory observation date.

Within that total, 60 source records have unresolved vendor identity. They remain in corpus-level lab evidence and are excluded from named-vendor rankings.

99.61%
Mean positive purity
0
Records reporting zero purity
284
Published source records
148
Public vendor identities
2
Amount below label >10%

Top 3 vendor evidence profiles for LL-37

Eligible vendors have at least 2 deduplicated certificates and 2 classifiable identity observations. Rank uses the 95% lower confidence bound on clean identity results; mean positive purity and certificate count break ties. Missing measurements are not passes. Exact-zero/not-detected and explicit wrong-compound markers count once per adverse certificate. This describes submitted-sample evidence, not every product or shipment, and is not an endorsement.

RankVendorDeduplicated certificatesAvg positive purityIdentity adverse results
#1 10 99.85% 0 of 8 (0.0%) 0 0% / not detected · 0 wrong compound · 2 unclassified Reveal with Pro →
#2 7 99.78% 0 of 7 (0.0%) 0 0% / not detected · 0 wrong compound Reveal with Pro →
#3 7 99.75% 0 of 7 (0.0%) 0 0% / not detected · 0 wrong compound Reveal with Pro →

Vendor identities are included with Pro. Record counts and lab measurements remain visible.

Recent source records: #119437 (99.27%) · #119167 (99.32%) · #116648 (99.65%) · #116847 (99.75%) · #115948 (99.69%) · #116554 (99.73%)

LL-37 studies and clinical research

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