Epithalon (50mg) Lot EPI50#23116: Certificate of Analysis (COA)
Paramount Peptides · tested Jun 26, 2026 by Accumark Labs · Older lot
This page summarizes the third-party lab report for lot EPI50#23116 of Epithalon (50mg) 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.
Epithalon (50mg) lot EPI50#23116 test results, explained
Every result printed on this certificate, as reported by Accumark Labs, 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 | 99.119% · Epitalon - Purity: 99.119% (spec > 98.0%; lab status: Conforms) | 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. | Meets the lab's specification (> 98.0%) |
| Identity | Conforms | Mass spectrometry measures the molecular mass of what's in the vial and compares it with the declared compound. "Confirmed" means the lab found the expected compound. | Reported as matching the declared compound |
| Quantity (measured content) | 61.03 mg | How much peptide the lab measured in the vial, compared with the amount printed on the label. | 122% of the 50 mg label amount |
| Endotoxin | Conforms (Spec: ≤ 5.0 EU/mL) | Bacterial endotoxins are fragments of bacterial cell walls. The LAL assay measures them in endotoxin units (EU/mL); a pass means the result was under the lab's limit. | Pass (as reported by the lab) |
| Rapid sterility screen (PCR) | Conforms (Spec: Not Detected) | A DNA-based (PCR) screen for common microbial contamination. It is a rapid screen, not a full sterility test. Test as named on the certificate: Rapid Sterility Screening (PCR). | Pass (as reported by the lab) |
Lot and report details
| Lot / batch number | EPI50#23116 |
|---|---|
| Product (as labeled by vendor) | Epithalon (50mg) |
| Labeled vial size | 50 mg |
| Testing laboratory | Accumark Labs |
| Sample received by lab | Jun 23, 2026 |
| Report date | Jun 26, 2026 |
| Sample size tested | 50.0 mg |
| Sample type (lab's label) | Peptide |
| Verification code (Report ID) | DGY4-MK9Z |
| Lab-record check | Lab's own record opened on Oct 7, 2026; lot number matched. |
| Vendor | Paramount Peptides |
| Verify | Open Accumark Labs's record ↗ |
Data notes: COA has 2 pages.
The certificate itself
About Accumark Labs
An independent US analytical lab. Per its terms of use, Accumark Labs is a DBA of Valence Analytical LLC. Reports are published through AccuVerify, which shows each report from the lab's own records at a unique web address.
Accreditation: Accumark's website lists ISO/IEC 17025 accreditation as pending. We found no published accreditation certificate (checked Oct 7, 2026).
Tests: On the certificates here: HPLC purity, identity, quantity and, where ordered, endotoxin and a rapid sterility screen (PCR).
How to verify: Open accumarklabs.com/verify and enter the verification code (Report ID). The live record should show the same lot, dates and results as this page.
Open Accumark Labs's record ↗Lab info from: accumarklabs.com · Accumark terms of use · checked Oct 7, 2026.
Compound reference: Epitalon
- Also called
- Epithalon; Ala-Glu-Asp-Gly; AEDG peptide
- Sequence
- AEDG (4 residues)
- Formula
- C14H22N4O9
- Mol. weight
- 390.35 g/mol
- Source
- PubChem CID 219042 ↗
A synthetic tetrapeptide (Ala-Glu-Asp-Gly). Reference data only; it describes the molecule, not any use of it. For laboratory research use only.
Epitalon research profile · Where to get lab-tested Epitalon
Epithalon (50mg) lot history at Paramount Peptides
All 5 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 |
|---|---|---|---|
| 22623 | Aug 11, 2026 | Accumark Labs | 99.90% |
| EPI50#23116 | Jun 26, 2026 | Accumark Labs | 99.12% |
| EPIT50-062026-2 | Jun 25, 2026 | Accumark Labs | 99.55% |
| EPI50A111425 | Nov 21, 2025 | Janoshik | 99.45% |
| EPI50A090925 | Sep 23, 2025 | Janoshik | 99.76% |
Also available from Peptira
Epitalon is also carried by Peptira, our other tested supplier. These are the most recent Epitalon certificates we have from them; each links to its own lot page.
| Product | Lot | Report date | Lab | HPLC purity |
|---|---|---|---|---|
| Epitalon Vial 10 mg | EPIT10-005 | Aug 4, 2026 | Freedom Diagnostics | 99.77% |
| Epitalon Vial 10 mg | EPIT10-004 | Dec 23, 2025 | Freedom Diagnostics | 99.10% |
| Epitalon Vial 10 mg | EPIT10-003 | Nov 9, 2025 | Freedom Diagnostics | 99.63% |
| Epitalon Vial 10 mg | EPIT10-002 | Sep 12, 2025 | Freedom Diagnostics | 99.68% |
| Epitalon Vial 10 mg | EPIT10-001 | Aug 13, 2025 | Janoshik | 99.75% |
Where to get lab-tested Epitalon: products, sizes and latest COAs →
What to check on your vial
- The lot number on the vial label reads EPI50#23116, character for character.
- The product name and vial size on the label match Epithalon (50mg) (50 mg).
- The lab's own record (accumarklabs.com, code DGY4-MK9Z) shows the same lot, report date (Jun 26, 2026) 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 EPI50#23116.
- Open Accumark Labs's record with the button above, or go to accumarklabs.com and enter DGY4-MK9Z.
- 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 EPI50#23116
What HPLC purity did Epithalon (50mg) lot EPI50#23116 test at?
Accumark Labs reported 99.12% HPLC purity for lot EPI50#23116 in a report dated Jun 26, 2026.
How do I verify the COA for lot EPI50#23116?
Go to accumarklabs.com and enter the verification code (report id) DGY4-MK9Z. The lab's own record should show lot EPI50#23116 with the same dates and results as this page.
Is lot EPI50#23116 the newest Epithalon (50mg) lot from Paramount Peptides?
No. The most recent Epithalon (50mg) certificate we have from Paramount Peptides is lot 22623. 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 EPI50#23116 exactly. A certificate of analysis covers one lot; it says nothing about other lots of the same product.
Other lots and COAs
Epithalon (50mg) at Paramount Peptides
Lab-tested lot EPI50#23116 · 99.12% HPLC purity · Accumark Labs
Affiliate disclosure: We earn a commission if you buy through the vendor links on this page, at no extra cost to you. Peptides & Coffee is an independent COA reference and is not owned by or affiliated with the vendors or labs listed. Lab results are published by the vendors and labs; we link to each lab's own verification record so you can check them yourself. Stock and lots change: the vendor may be shipping a newer lot than the one on this page, so check your vial label.