Finnrick, an independent testing programme, publishes 4 assays for Zhang TY: 3 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 1 did not. Most recent assay 7 Jan 2026.
Zhang TY operates from China, listed by Finnrick as "Trading", has no storefront on record — Finnrick lists only a messaging or social contact. Source: Finnrick, https://www.finnrick.com/vendors/zhang-ty.
Finnrick-tested with excellent results. Tested across 2 peptide products with 4 total samples.
Zhang TY is listed as active. Finnrick Grade A. Finnrick avg score: 6.4/10 across 4 samples (2 products). Top-rated for purity and quality.
Zhang TY holds independent lab grade A, assigned across 4 graded samples, average score 6.4/10. That grade comes from an independent grader's own sampling, not from PeptideAtlas, and it describes the samples that grader obtained rather than every batch sold.
| Product | Assays | Result |
|---|---|---|
| Retatrutide | 3 | 3 passed, 0 failed |
| Tesamorelin | 1 | 0 passed, 1 failed |
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
| Status | Active |
|---|---|
| Independent lab grade | A (4 samples) |
| Average grader score | 6.4/10 |
| Vendor type | Research-use supplier |
These details were read from Zhang TY's own website on 2026-08-10. Pages consulted:
Zhang TY is listed as active and we hold 4 Finnrick assays (3 passing, 1 failing its purity threshold); an independent lab grade of A. That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. Finnrick, an independent testing programme, publishes 4 assays for Zhang TY: 3 met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation) and 1 did not. Most recent assay 7 Jan 2026.
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