Lab records by peptide
Epithalon vendors
Vendors that sell Epithalon, ranked by what independent labs found in their vials: 8 tests across 3 shops since February 2026. No shop has graded A or B for Epithalon yet.
- 33%of Epithalon tests passed; median purity 98.80%
- 43%of vials held more than 5% less Epithalon than the label
- Most common failurepurity under 99.5% (3 tests). In 1 vial the lab could not confirm it was Epithalon at all.
- Last 90 days6 tests from 3 shops, 3 failed. Newest result Sep 24, 2026.
Epithalon vendors ranked by lab record
The grade is for Epithalon only, not the shop's whole catalog. A shop can pass on one peptide and fail on another. Shops with the same grade are ordered by number of tests.
| Vendor | Grade | Tests | Passed | Median purity | Under-filled | Last test |
|---|---|---|---|---|---|---|
| YimeiNo working storefront foundLast failure Feb 26, 2026: purity under 99.5% | D | 3 | 2/3 | 99.60% | 0/3 | Aug 21, 2026 |
| Mokemei Zhengzhou Biotechnology MKMLast failure Sep 24, 2026: purity under 99.5% | – | 3 | 0/3 | 98.85% | 2/2 | Sep 24, 2026 |
| Above All Peptides | – | 2 | – | 98.80% | 1/2 | Sep 17, 2026 |
Recent failed Epithalon tests
The newest results that failed, with the reason and the lab's certificate. Check whether your batch number matches before you trust a shop's own paperwork.
- Mokemei Zhengzhou Biotechnology MKMSep 24, 2026 · Krause Analyticalpurity under 99.5% · purity 98.70% · fill -12.0% · Certificate
- Mokemei Zhengzhou Biotechnology MKMAug 12, 2026 · Krause Analyticalpurity under 99.5% · purity 99.00% · fill -7.0% · Certificate
- Mokemei Zhengzhou Biotechnology MKMJul 1, 2026 · Krause Analyticalthe lab could not confirm it was the labelled peptide · Certificate
- YimeiFeb 26, 2026 · Krause Analyticalpurity under 99.5% · purity 98.80% · fill -1.0% · Certificate
Epithalon vendors that closed or went offline
Each status is quoted from its source. A shop with no working website may still sell through messaging apps, which is a reason for more caution, not less.
- YimeiNo working storefront found (Finnrick) · last Epithalon test Aug 21, 2026
The full list is on closed peptide vendors.
Before you order Epithalon
- Look at the shop's grade for Epithalon, not its average. Yimei has the most Epithalon tests (3); a shop with one or two tests has not shown it is consistent.
- 100% of these vials were bought and sent in by customers; the rest were sent by Finnrick or by the shop itself. Results from vials a shop chose to send are the weakest evidence.
- 2 labs tested them, mostly Krause Analytical and BTLabs. Ask for the certificate for your batch and check it on the lab's own site.
- Run the vendor checklist before paying, and read how the grades work.
Research peptides are sold for laboratory use only. This page reports lab results; it is not medical advice.