PGB
PGB publishes lab certificates for 19% of batches tracked, against a site median of 85%, indicating minimal testing transparency across its product range. Community members have commissioned 16 independent tests, suggesting customers are regularly paying to verify what the vendor has not documented. One batch, PGB-T30-4 (Tirzepatide), failed endotoxin analysis at 14.982 EU/vial and was flagged; the vendor's response to this issue is not on record. Purity across available certificates runs 99.61% median with no results below 98%.
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 2026-10-17.
Evidence Summary
54
Batches Tracked
12
Batches Tested
99.3%
Avg Purity
100%
Identity Pass Rate
19 certificates seen. 5 of them name no lot we can match a vial to, so they are not counted in the figures above.
Last independent test: 2 days ago
Peptides
Batch History
| Batch | Peptide | Test Status | First Seen | Mentions |
|---|---|---|---|---|
| PGB-T60-4 | Tirzepatide | Tested | 2 days ago | 1 |
| PSPT10-1 | PT-141 | Untested | 1 week ago | 2 |
| PSTA110-2 | Thymosin Alpha-1 | Untested | 2 weeks ago | 1 |
| PGB | PT-141 | 99.8% | 2 weeks ago | 0 |
| PGB-R24-1 | Retatrutide | 99.6% | 2 weeks ago | 0 |
| PGB-R12-1 | Retatrutide | 99.8% | 2 weeks ago | 0 |
| PGB-CAG5-3 | Cagrilintide | 99.8% | 2 weeks ago | 0 |
| PGB-MOTS-4 | MOTS-C | 98.7% | 2 weeks ago | 0 |
| PSRETA15-1 | Retatrutide | Tested | 2 weeks ago | 1 |
| PSTIRZ30-1 | Tirzepatide | Tested | 2 weeks ago | 2 |
Community Sentiment
Recent Concerns
I’m asking because when I still noob-ish, I had PGB Reta 15mg and someone posted their test results for it (mass/purity), and after I confirmed it was legit and the numbers were good, I started pinnin
I swear I am going crazy. Been on Tirz for 2 years and 3 months. Started off with ASC and then switched to SSA. Been in maintenance since January. Both vendors are gone now. I am now using PGB and hav