Vendor profile
Research · US · —
ZLZ Peptide
B+
Composite 8.4 / 10
Last updated 2026-10-12. Composite is computed from the live database; missing sub-scores redistribute weight across the others.
Peptide breakdown
| Peptide | Score | Lab quality | Tests | Purity | Qty var. | $/mg verified | Last test | Ranking |
|---|---|---|---|---|---|---|---|---|
| Retatrutide | 9.3A |
9.1 | 107 | — | — | — | — | view |
| GHK-Cu | 8.8B+ |
8.5 | 19 | — | — | — | — | view |
| Tirzepatide | 8.8B+ |
8.5 | 96 | — | — | — | — | view |
| Semaglutide | 7.9B+ |
7.3 | 12 | — | — | — | — | view |
| PT-141 | 7.7B+ |
7.1 | 3 | — | — | — | — | view |
| Ipamorelin | 7.3B |
7.3 | 6 | — | — | — | — | view |
| Sermorelin | 6.4C |
5.5 | 5 | — | — | — | — | view |
| BPC-157 | 5.9C |
4.8 | 13 | — | — | — | — | view |
| Tesamorelin | 5.5C |
4.3 | 18 | — | — | — | — | view |
| TB-500 | 4.9D |
3.7 | 6 | — | — | — | — | view |
| CJC-1295 | 4.2D |
4.2 | 5 | — | — | — | — | view |
| IGF-1 LR3 | — |
— | 0 | — | — | — | — | view |
| Epitalon | — |
— | 0 | — | — | — | — | view |
| Selank | — |
— | 0 | — | — | — | — | view |
| MOTS-c | — |
— | 0 | — | — | — | — | view |
| Semax | — |
— | 0 | — | — | — | — | view |
| KPV | — |
— | 0 | — | — | — | — | view |
COA transparency
- ○ Publishes per-batch COAs (not just one COA for everyone) (pending)
- ○ Both HPLC and mass spec shown (pending)
- ○ Endotoxin or sterility data shown (pending)
- ○ At least one COA independently cross-checked (pending)
- ○ Most recent COA within 90 days (pending)
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