LL-37 lab tests
64 certificates of analysis for LL-37 are on file, from 53 shops and 16 labs. The latest was tested on .
These are certificates shops have chosen to publish, verified for authenticity before listing. Because shops decide which COAs to make public, the set reflects the batches they published rather than every production batch — a selection bias we state openly. What shop COAs show →
What LL-37 results look like
Purity is tightly bunched: the middle 80% of results sit within 0.9 points. Measured content spreads across 38 points of the label.
Latest LL-37 tests
| Tested | Shop | Lab | Purity | Measured vs label | Endotoxin | Record |
|---|---|---|---|---|---|---|
| Peptide Hackers | Accumark Labs | 99.77% | 6.92 / 10 mg 69% of labelCheck label | — | AM20260925-19✓ | |
| BioEdge Research Labs | Kovera Labs | 99.56% | 5.19 / 5 mg 104% of label | Pass | 260623LL53✓ | |
| Peptide Plugs | freedomdiagnosticstesting.com | 99.65% | 5.57 / 5 mg 111% of label | Pass | 175-01-DK✓ | |
| Core Peptides | Vanguard Laboratory | 99.80% | 5 / 5 mg 100% of label | — | C74145 | |
| Biotech Peptides | MZ Biolabs | 99.98% | 5 / 5 mg 100% of label | — | 3141045 | |
| Humatide Peptides | ILS Laboratories | 99.48% | 5.32 / 5 mg 106% of label | — | H05LL37060126 | |
| Elevated Peptides | MZ Biolabs | 98.89% | not reported | — | 2026-06-22 | |
| Oasis Labs | Bioviridian | 99.90% | 10.57 / 10 mg 106% of label | — | 112455✓ | |
| National Science Labs | freedomdiagnosticstesting.com | 99.96% | 5.94 / 5 mg 119% of label | — | View record → | |
| Excalibur Peptides | freedomdiagnosticstesting.com | 99.70% | 5.81 / 5 mg 116% of label | — | View record → |
Results by lab
| Lab | Tests | Median purity | Median measured vs label | Endotoxin reported | Confirmed on lab portal |
|---|---|---|---|---|---|
| freedomdiagnosticstesting.com | 19 | 99.82% | 122% | 5 | 7 |
| Janoshik Labs | 13 | 99.44% | 102% | 0 | 3 |
| Vanguard Laboratory | 6 | 99.80% | 100% | 1 | 1 |
| Bioviridian | 4 | 99.75% | 104% | 0 | 2 |
| Kovera Labs | 4 | 99.89% | 108% | 3 | 3 |
| BioRegen | 3 | 99.74% | 100% | 1 | 0 |
| liquilabs | 3 | 99.80% | 114% | 3 | 0 |
What the LL-37 record shows
LL-37's record holds 64 certificates from 53 shops, tested by 16 labs between October 2024 and September 2026. Reported HPLC purity ran from 91.08% to 99.98% (median 99.76%). Measured content ran from 69% to 157% of the label (median 106%); 3 vials came in under 90%. 55 of the 64 vials were labelled 5 mg. 15 certificates include an endotoxin result, and 17 were confirmed on the lab's own portal.
Generated from the table below · updates with every new certificate
Every published LL-37 test
Measured amount in amber when it is under 90% or over 130% of the label; Check label when it is under 80% or over 150%. Records without a lot number link as View →.
Seven checks for any LL-37 certificate
- Batch-matched and independent. The certificate names the lot in your hands and comes from a lab the vendor neither owns nor pays.
- Purity against the range. Read the figure against what other certificates for this compound report. How to read HPLC and mass-spec results
- Mass-spec identity. Only mass spectrometry shows which molecule is in the vial.
- Net content, measured. Purity and quantity are separate questions. Why 10 mg isn't 10 mg
- Endotoxin on the batch. A missing line means not tested, not passed. Endotoxin testing and LAL interpretation
- A lab you can check. Named on the certificate, with a way to verify it. Testing labs we track · Red flags in a certificate of analysis
- What no test shows. A clean certificate says nothing about efficacy, dosing or long-term safety.
Related lab tests
More on LL-37
Labs with LL-37 tests on file (16): Accumark Labs, Kovera Labs, freedomdiagnosticstesting.com, Vanguard Laboratory, MZ Biolabs, ILS Laboratories, Bioviridian, liquilabs, Testides, Janoshik Labs, Analytical Formulations Inc, Horizon Analytical, BioRegen, Chromate, MDx BioAnalytical Laboratory, Analiza Białek