GLOW lab tests
92 certificates of analysis for GLOW are on file, from 63 shops and 13 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 GLOW results look like
Latest GLOW tests
| Tested | Shop | Lab | Purity | Measured vs label | Endotoxin | Record |
|---|---|---|---|---|---|---|
| Werhnerlab | — | 98.10% | not reported | Pass | GW70-1152✓ | |
| Purely Peptides | Bioviridian | 99.84% | not reported | — | BBG-20260811-01✓ | |
| Ramp Peptides | freedomdiagnosticstesting.com | 99.81% | not reported | — | GLOW70-RP03✓ | |
| Drakon Peptides | Janoshik Labs | — | not reported | Reported | DRK-GLO-JUL26✓ | |
| Glow Aminos | ILS Laboratories | 99.74% | not reported | — | GL-010233✓ | |
| Peptide Foundry | ILS Laboratories | 99.65% | not reported | Reported | FO996✓ | |
| Biotech Peptides | MZ Biolabs | 99.56% | not reported | — | 3141011 | |
| PeptideRUO | freedomdiagnosticstesting.com | 99.52% | not reported | — | BG700706✓ | |
| Umbrella Labs | freedomdiagnosticstesting.com | 99.60% | not reported | — | ULP-49191✓ | |
| BioEdge Research Labs | Kovera Labs | 99.57% | not reported | Pass | 062526GLO70✓ |
Results by lab
| Lab | Tests | Median purity | Median measured vs label | Endotoxin reported | Confirmed on lab portal |
|---|---|---|---|---|---|
| freedomdiagnosticstesting.com | 37 | 99.71% | 100% | 8 | 35 |
| Kovera Labs | 13 | 99.74% | — | 11 | 13 |
| Vanguard Laboratory | 10 | 99.50% | 107% | 2 | 1 |
| Bioviridian | 6 | 99.80% | — | 2 | 3 |
| ILS Laboratories | 6 | 99.81% | — | 1 | 6 |
| Chromate | 5 | 99.81% | — | 2 | 5 |
| MZ Biolabs | 4 | 99.81% | — | 0 | 0 |
| Janoshik Labs | 3 | — | — | 1 | 3 |
What the GLOW record shows
GLOW's record holds 92 certificates from 63 shops, tested by 13 labs between May 2025 and October 2026. Reported HPLC purity ran from 95.11% to 99.99% (median 99.73%). Measured content ran from 100% to 107% of the label (median 100%). 29 certificates include an endotoxin result, and 69 were confirmed on the lab's own portal. freedomdiagnosticstesting.com ran 37 of the 92 tests.
Generated from the table below · updates with every new certificate
Every published GLOW 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 GLOW 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 GLOW
Labs with GLOW tests on file (13): Bioviridian, freedomdiagnosticstesting.com, Janoshik Labs, ILS Laboratories, MZ Biolabs, Kovera Labs, Ethos Analytics, Uzorak, Testides, Vanguard Laboratory, Chromate, Accurate Test Lab, Analytical Formulations Inc