Cagrilintide certificates of analysis
Every Cagrilintide lot, with the full results from Freedom Diagnostics. Current lots test at 99.91% purity by HPLC-UV, with identity confirmed by LC-MS on every lot.
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All lots
Find the lot number on your vial label and open the matching row. Each lot page shows every result, the methods used, the mass confirmation and the laboratory reference numbers.
| Lot | Vial size | Net content | Purity (HPLC-UV) | Identity (LC-MS) | Endotoxin (LAL) | Microbial (PCR) | Reported | COA |
|---|---|---|---|---|---|---|---|---|
| KB17122 | 5 mg | 5.51 mg | 99.91% | Confirmed | Not tested | Not tested | View lot KB17122 | |
| KB17122 | 5 mg | 5.51 mg | 99.91% | Confirmed | Not tested | Not tested | View lot KB17122 |
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 Cagrilintide Labs.
Cagrilintide testing records
Every test on every Cagrilintide lot in one table: lot, test, method, result, laboratory and date. The same data is available as a CSV file.
| Lot | Size | Test | Method | Result | Laboratory | Reported |
|---|---|---|---|---|---|---|
| KB17122 | 5 mg | Purity | HPLC-UV (area percent) | 99.91% | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Identity | LC-MS | Confirmed | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Net content | Laboratory quantitation | 5.51 mg | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Appearance | Visual | White lyophilized powder | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Bacterial endotoxin | LAL assay, USP <85> | Not tested | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Microbial DNA | PCR | Not tested | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Purity | HPLC-UV (area percent) | 99.91% | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Identity | LC-MS | Confirmed | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Net content | Laboratory quantitation | 5.51 mg | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Appearance | Visual | White lyophilized powder | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Bacterial endotoxin | LAL assay, USP <85> | Not tested | Freedom Diagnostics | May 5, 2026 |
| KB17122 | 5 mg | Microbial DNA | PCR | Not tested | Freedom Diagnostics | May 5, 2026 |
Download the testing records (CSV). Values are copied from each laboratory certificate.
Verify a certificate
Check any Cagrilintide certificate directly with the laboratory.
- Find the lot number on your vial. It is printed on the label, for example KB17122.
- Look it up. Enter it at cagrilintide.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.
Reading these certificates
Guides to every section of a Cagrilintide certificate and the methods behind it.
Buy Cagrilintide
5 mg vials. Current lot KB17122 tested at 99.91% purity with identity confirmed by LC-MS. Current purchasing is available through Klow.bio.