PTB
Peptronix Biotech
PTB has certificates for all 5 tracked batches, above the site median of 85%. One batch tested at 92.26% purity, well below the typical range; the vendor's response to this result is not documented. Community testing is minimal at 2 group tests against a site median of 20, suggesting either strong individual confidence in the vendor's certificates or limited user overlap with testing groups. No direct problems or recalls are on record.
Written from the batch and test records on this page. Every certificate counted here was commissioned by the vendor — no independent test has been submitted to the site. Updated 2026-10-18.
Evidence Summary
5
Batches Tracked
5
Batches Tested
98.0%
Avg Purity
100%
Identity Pass Rate
9 certificates seen. 4 of them name no lot we can match a vial to, so they are not counted in the figures above.
Last independent test: 1 week ago
Peptides
Batch History
| Batch | Peptide | Test Status | First Seen | Mentions |
|---|---|---|---|---|
| 2609R20 | Retatrutide | 99.9% | 1 week ago | 0 |
| 2609MS10 | MOTS-C | 98.9% | 1 week ago | 0 |
| PTB-R20-202604 | Retatrutide | 92.3% | 1 week ago | 0 |
| 2606R20 | Retatrutide | 99.7% | 1 week ago | 0 |
| 2606T30 | Tirzepatide | 99.6% | 1 week ago | 0 |