SPB
Shanghai Synthetic Peptide Bio
Also known as SPB Yuna, Yuna
SPB's testing coverage sits at 29% against a site median of 90%, meaning most batches ship without certificates. Community members have commissioned 101 independent tests to fill this gap—five times the site median—suggesting customers are verifying what the vendor does not. Ten endotoxin tests failed across the tracked batches, with two recalled lots showing critical contamination: one at 880 EU/vial and another at 53 EU/vial, both well above acceptable thresholds. Direct problem reports number 28, though two product-line reports lack batch attribution; nine batches have been flagged or recalled in total.
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 2026-10-21.
Evidence Summary
165
Batches Tracked
51
Batches Tested
99.7%
Avg Purity
62%
Identity Pass Rate
94 certificates seen. 26 of them name no lot we can match a vial to, so they are not counted in the figures above.
Last vendor certificate: 1 week ago
Peptides
Batch History
| Batch | Peptide | Test Status | First Seen | Mentions |
|---|---|---|---|---|
| T30L-N14H | Tirzepatide | Untested | 4 days ago | 1 |
| MOT10C-N12Z | MOTS-C | Untested | 1 week ago | 3 |
| SS31E6L-E25TF | SS-31 | Untested | 1 week ago | 3 |
| SPB2609100479 | Tesamorelin | 99.9% | 1 week ago | 1 |
| TSM10E6C-E22H | Tesamorelin | Untested | 1 week ago | 4 |
| T1026LY | Tirzepatide | Untested | 2 weeks ago | 1 |
| R30E6C-E5H | Retatrutide | Untested | 3 weeks ago | 1 |
| R10E6L-E20L | Retatrutide | Untested | 3 weeks ago | 2 |
| R10E6C-E22L | Retatrutide | 99.7% | 3 weeks ago | 4 |
| SN26-1-02 | Tirzepatide | Tested | 3 weeks ago | 0 |
Community Sentiment
Recent Concerns
📊 SPB WOLVERINE 🔹 Endotoxin Level: 66.057 EU/Vial. Note: Endotoxin is measured in EU (Endotoxin Units). For tirzepatide, <10 EU/mg is the recommended threshold from FDA-registered API standards. •
R526LY-1L And just the fact that people are saying there have in deed been potency issues is enough for me. Thanks
Preface this by saying ive had many great experiences with Yuna - the last batch of reta i ordered seems to not be working. Im taking much higher doses then i ever had before for little to no effect.