GLP-3 RT lot KB89232 certificate of analysis
10 mg vial. Tested by Freedom Diagnostics: purity 99.98% by HPLC-UV, identity confirmed by LC-MS, net content 13.15 mg. Reported August 15, 2026.
Sample summary
| Product | GLP-3 RT 10 mg |
|---|---|
| Lot | KB89232 |
| Purity (HPLC-UV) | 99.98% |
| Identity (LC-MS) | Confirmed |
| Net content | 13.15 mg (+31.5% vs. label) |
| Appearance | White lyophilized powder |
| Endotoxin | Pass |
| Microbial analysis (PCR) | No detectable microbial DNA |
Laboratory record
| Testing laboratory | Freedom Diagnostics |
|---|---|
| Client on certificate | Klow.bio |
| Accession number | 2608110251 |
| Lab search code | Klow2608110251 |
| 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 GLP-3 Research Supply.
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 | 99.98% |
| Net content | Quantitation by the laboratory | 13.15 mg |
| Bacterial endotoxin | LAL assay per USP <85>, 2 replicates, sensitivity ≤0.05 EU/mL | Pass |
| Microbial DNA | Polymerase chain reaction (PCR) for common microbial contaminants | No detectable microbial DNA |
Mass confirmation
| Ion | Observed m/z | Expected m/z | Difference |
|---|---|---|---|
| [M+3H]3+ | 1578.3 | 1578.1 | +0.2 |
| [M+3H+K]4+ | 1193.1 | 1193.4 | -0.3 |
Expected values are calculated by GLP-3 Research Supply from the average molecular weight of 4731.33 g/mol. Additional unassigned signals at m/z 1577.4, 1579.2, 1585.6 and 1591.4 appear in the 3+ region. The [M+4H]4+ ion is labeled on the spectrum without a separate printed value.
Verify this certificate
Accession number 2608110251, Lab search code Klow2608110251.
- Find the lot number on your vial. It is printed on the label, for example KB89232.
- Look it up. Enter it at buyglp3peptide.com/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 GLP-3 Research Supply.
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.