Tirzepatide · Qingdao Sigma Chemical

AI summary Trust: low Forum scrape

This COA was extracted from a community forum, with the original poster claiming QSC tested their Tirzepatide batch (TZ 30mg 1 vial). The reported purity was 99.825%, and the tested quantity was 32.3mg against a 30mg label (7.67% deviation). The lab's signature is not directly verifiable, and the test is stale (over 1 year old). This should be treated as community signal, not confirmation.

Watch out for

chain-of-custody gap
stale (1+ years old)
no endotoxin test

Test date

2024-11-25

Purity

99.83%

Batch / lot

TZ 30mg 1 vial

Lab

Qingdao Sigma Chemical

Quantity

label 30mg tested 32.3mg

Qty vs label

+7.7%

Endotoxins

—

Test score

—

Manufacturer

Qingdao Sigma Chemical

View vendor dossier

Source

Third-party community lab

⚠ Asserted only

No verifiable evidence captured. This entry was added to our corpus from Third-party community lab. We did not save the certificate image, did not hash an artifact, and the upstream URL is either a domain root or absent — we cannot independently confirm this report existed. Treat as curator-asserted only.

Catalogued: 2026-04-24

This COA is part of TitrateLab's community-trust corpus. See more from Qingdao Sigma Chemical or learn how trust scores are computed on the methodology page.