TB-500 · Qingdao Sigma Chemical

AI summary Trust: low Forum scrape

This COA was extracted from a community forum, where the original poster claimed 'Peptide Test' analyzed QSC's TB-500 (batch TB-500 (TB4) 10mg 1 vial). The reported purity was 98.989%, and the quantity tested at 10.8mg for a 10mg label. However, the lab's signature is not directly verifiable from this re-shared image, creating a chain-of-custody gap. This test is also stale (over 1 year old).

Watch out for

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

Test date

2024-12-13

Purity

98.99%

Batch / lot

TB-500 (TB4) 10mg 1 vial

Lab

Peptide Test

Quantity

label 10mg tested 10.8mg

Qty vs label

+8.0%

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.