GLP-3 RT lot KB48721 certificate of analysis
15 mg vial. Tested by Freedom Diagnostics: purity 99.67% by HPLC-UV, identity confirmed by LC-MS, net content 18.62 mg. Reported August 15, 2026.
Sample summary
| Product | GLP-3 RT 15 mg |
|---|---|
| Lot | KB48721 |
| Purity (HPLC-UV) | 99.67% |
| Identity (LC-MS) | Confirmed |
| Net content | 18.62 mg (+24.1% vs. label) |
| Appearance | White lyophilized powder |
| Endotoxin | Not tested for this lot |
| Microbial analysis (PCR) | Not tested for this lot |
Laboratory record
| Testing laboratory | Freedom Diagnostics |
|---|---|
| Client on certificate | Klow.bio |
| Accession number | 2608110254 |
| Lab search code | Klow2608110254 |
| Received by lab | August 11, 2026 |
| Reported | August 15, 2026 |
| Release specification | Purity ≥95%; identity confirmed |
| Against stated specification | Meets |
The client listed on the certificate, Klow Labs LLC (klow.bio), is the company that operates GLP3 Peptide Co..
Analytical results and methods
| Test | Method | Result |
|---|---|---|
| Identity | liquid chromatography–mass spectrometry (LC-MS) | Confirmed |
| Purity | HPLC with UV detection (area percent); main peak at about 14.9 min | 99.67% |
| Net content | Quantitation by the laboratory | 18.62 mg |
| Bacterial endotoxin | Limulus amebocyte lysate (USP <85>) | Not tested |
| Microbial DNA | Polymerase chain reaction (PCR) for common microbial contaminants | Not tested |
Mass confirmation
| Ion | Observed m/z | Expected m/z | Difference |
|---|---|---|---|
| [M+3H]3+ | 1578.2 | 1578.1 | +0.1 |
| [M+4H]4+ | 1183.6 | 1183.8 | -0.2 |
| [M+3H+K]4+ | 1193.0 | 1193.4 | -0.4 |
Expected values are calculated by GLP3 Peptide Co. from the average molecular weight of 4731.33 g/mol. An additional signal at m/z 1590.4 appears in the 3+ region.
Verify this certificate
Accession number 2608110254, Lab search code Klow2608110254.
- Find the lot number on your vial. It is printed on the label, for example KB89232.
- Look it up. Enter it at glp3peptide.bio/verify, or open the matching lot in the COA archive.
- Check the lab's own record. Scan the Freedom Diagnostics QR code printed on the certificate, then search for klow.bio under the Company tab to view the laboratory record.
- Compare the details. Lot number, the laboratory’s reference numbers, purity and dates should match exactly.
What a certificate of analysis does and doesn't show
- A COA reports the identity, purity and content of the specific sample tested, on its test date. Results apply to that lot only.
- HPLC purity measures the main peak relative to other detected components. It does not identify the peak on its own; the separate identity test (LC-MS) does that.
- Mass confirmation matches molecular weight. It does not by itself confirm amino-acid order.
- Endotoxin and microbial results apply only where those tests appear on the certificate. Lots without them are marked "Not tested".
- A certificate does not establish stability after the test date or suitability for any particular purpose.
Other GLP-3 RT lots
| Lot | Vial size | Net content | Purity (HPLC-UV) | Identity (LC-MS) | Endotoxin (LAL) | Microbial (PCR) | Reported | COA |
|---|---|---|---|---|---|---|---|---|
| KB89232 | 10 mg | 13.15 mg | 99.98% | Confirmed | Pass | No detectable microbial DNA | View lot KB89232 | |
| KB48721 | 15 mg | 18.62 mg | 99.67% | Confirmed | Not tested | Not tested | View lot KB48721 | |
| KB3011 | 30 mg | 36.10 mg | 99.93% | Confirmed | Not tested | Not tested | View lot KB3011 |
Testing laboratory: Freedom Diagnostics. Release specification: purity ≥95% by HPLC-UV with identity confirmed by LC-MS. Results apply only to the lot listed. Certificates list the testing client as Klow.bio / Klow Labs LLC, the company that operates GLP3 Peptide Co..
Buy GLP-3
10 mg, 15 mg and 30 mg vials. Current lot KB89232 tested at 99.98% purity with identity confirmed by LC-MS. Current purchasing is available through Klow.bio.