GLP-1 S - 20mg Lot HSEM-0019: Certificate of Analysis (COA)
Paramount Peptides · tested Sep 27, 2024 by Janoshik · Older lot
This page summarizes the third-party lab report for lot HSEM-0019 of GLP-1 S - 20mg sold by Paramount Peptides. The lot number on this page should match the lot printed on the vial label. Don't rely on this summary alone: use the button to open the lab's own record and compare the lot, date and results.
GLP-1 S - 20mg lot HSEM-0019 test results, explained
Every result printed on this certificate, as reported by Janoshik, with a plain-English note on what the test measures. "Pass" and "specification" wording comes from the certificate; where the lab prints no pass/fail, we say so.
| Test | Result on the certificate | What it measures | This lot |
|---|---|---|---|
| HPLC purity | 99.706% | HPLC separates the sample into its components; purity is the share of the detected signal that sits in the main peak. On its own it doesn't show which molecule that peak is. That's what the identity test is for. | No pass/fail printed; reported value at or above 98% |
| Identity | Not reported | This certificate doesn't report an identity test, so it doesn't confirm which molecule is in the vial. Purity and quantity alone can't tell you that. | Not tested on this certificate |
Lot and report details
| Lot / batch number | HSEM-0019 |
|---|---|
| Product (as labeled by vendor) | GLP-1 S - 20mg |
| Labeled vial size | 20 mg |
| Testing laboratory | Janoshik |
| Tests requested | Assessment of a peptide vial or vials |
| Testing ordered | Sep 25, 2024 |
| Sample received by lab | Sep 27, 2024 |
| Report date | Sep 27, 2024 |
| Task number + unique key | Task #51024, key MR7UY1EXTVW6 |
| Lab-record check | Not checked automatically. Open the lab's record to compare. |
| Vendor | Paramount Peptides |
| Verify | Open Janoshik's record ↗ |
The certificate itself
About Janoshik
An independent analytical lab based in Prague, Czech Republic (Janoshik s.r.o.). Each report carries a task number and a unique verification key.
Accreditation: No accreditation is printed on these reports, and we found no published ISO/IEC 17025 accreditation for the lab (checked Oct 7, 2026).
Tests: On the reports here: HPLC purity and the measured content per vial. Other tests appear only when they're listed under Results.
How to verify: Go to janoshik.com/verify and enter the unique key printed on the report (the report's QR code links there too). Janoshik blocks automated checks, so we haven't matched these records ourselves.
Open Janoshik's record ↗Lab info from: janoshik.com · checked Oct 7, 2026.
GLP-1 S - 20mg lot history at Paramount Peptides
All 15 certificates we have for this product from Paramount Peptides, newest first. The chart plots HPLC purity by report date (lots without a purity figure are left out). This lot is highlighted.
| Lot | Report date | Lab | HPLC purity |
|---|---|---|---|
| SR20N031726 | Apr 14, 2026 | Janoshik | 99.90% |
| $20N110725 | Nov 19, 2025 | Janoshik | 99.74% |
| S20N103025 | Nov 10, 2025 | Janoshik | 99.19% |
| $20N101325 | Oct 27, 2025 | Janoshik | 99.56% |
| 20N100125 | Oct 16, 2025 | Janoshik | 99.62% |
| S20N082225 | Sep 1, 2025 | Janoshik | 99.91% |
| SEM20N062425 | Jul 2, 2025 | Janoshik | 99.84% |
| SEM20N061825 | Jun 29, 2025 | Janoshik | 99.64% |
| SEM20N060925 | Jun 20, 2025 | Janoshik | 99.66% |
| SEM20N060225 | Jun 8, 2025 | Janoshik | 99.51% |
| SEM20N051225 | May 23, 2025 | Janoshik | 99.44% |
| SEM20N050825 | May 18, 2025 | Janoshik | 99.69% |
| SEM20N010625 | Jan 18, 2025 | Janoshik | 99.78% |
| SEM20N01022025 | Jan 18, 2025 | Janoshik | 99.85% |
| HSEM-0019 | Sep 27, 2024 | Janoshik | 99.71% |
What to check on your vial
- The lot number on the vial label reads HSEM-0019, character for character.
- The product name and vial size on the label match GLP-1 S - 20mg (20 mg).
- The lab's own record (www.janoshik.com, code Task #51024, key MR7UY1EXTVW6) shows the same lot, report date (Sep 27, 2024) and results as this page.
- The report date is a date you'd expect for your purchase: a much older certificate may belong to an earlier lot.
- The identity line names the compound you expect. If it's "Not reported", the certificate doesn't confirm which molecule is in the vial.
- The certificate is a clean document: no mismatched fonts, edited numbers or a missing verification code.
How to check this COA in under a minute
- Find the lot number on your vial label and confirm it reads HSEM-0019.
- Open Janoshik's record with the button above, or go to www.janoshik.com and enter Task #51024, key MR7UY1EXTVW6.
- Compare the lot number, test date, purity and identity result with the table above. They should be identical.
- New to COAs? Read How to read a peptide COA for what HPLC purity and mass spec identity mean.
Questions about lot HSEM-0019
What HPLC purity did GLP-1 S - 20mg lot HSEM-0019 test at?
Janoshik reported 99.71% HPLC purity for lot HSEM-0019 in a report dated Sep 27, 2024.
How do I verify the COA for lot HSEM-0019?
Go to www.janoshik.com and enter the task number + unique key Task #51024, key MR7UY1EXTVW6. The lab's own record should show lot HSEM-0019 with the same dates and results as this page.
Is lot HSEM-0019 the newest GLP-1 S - 20mg lot from Paramount Peptides?
No. The most recent GLP-1 S - 20mg certificate we have from Paramount Peptides is lot SR20N031726. Your vial label tells you which lot you have.
Does this certificate apply to my vial?
Only if the lot number printed on your vial reads HSEM-0019 exactly. A certificate of analysis covers one lot; it says nothing about other lots of the same product.
Other lots and COAs
GLP-1 S - 20mg at Paramount Peptides
Lab-tested lot HSEM-0019 · 99.71% HPLC purity · Janoshik
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