Certificates of Analysis
Every batch of every CrestBioLabs product is independently tested at a third-party analytical laboratory. Browse, search, or download the COA for any batch below.
COAs Published
Products Covered
Average Purity
Pass Rate
Related Resources
Frequently Asked Questions
A Certificate of Analysis is an official document from an independent third-party laboratory that verifies the identity, purity, and content of a specific batch of a research compound. Each COA includes HPLC chromatographic purity data, mass spectrometry identity confirmation, and quantitative content measurements compared to the labeled claim.
Each production batch receives its own independent COA. When a new batch is manufactured and tested, a new COA is generated and published here. Product pages always display the most recent COA, and all historical batch COAs remain accessible through this hub.
Chromatographic purity is determined by HPLC (High-Performance Liquid Chromatography) area normalization. The peak area of the target compound is divided by the total area of all peaks in the chromatogram. A result of 99.79% means that 99.79% of the detected material is the target compound, with only 0.21% attributable to any other species. CrestBioLabs requires a minimum of 98.0% chromatographic purity for all products.
Each COA includes a test certificate ID and a verification URL from the issuing laboratory. You can visit the laboratory's verification portal and enter the certificate ID to independently confirm the authenticity of the analytical results. The laboratory name, address, and director information are also provided for direct verification.
Yes. Every CrestBioLabs product vial includes a batch identifier on its label in the format CBL-XX-YYMM-A01. You can search for this batch ID on this page or navigate directly to crestbiolabs.com/coa/[your-batch-id] to view the corresponding Certificate of Analysis.
Our COAs are generated using USP/NF pharmacopeial methods: HPLC-UV/MS per USP/NF 621 for purity, potency, and identification; LAL method per USP/NF 85 for bacterial endotoxin testing; and ICP-MS per USP/NF 233 for elemental impurity screening. All testing is performed by independent, accredited analytical laboratories.
Research Use Only: All Certificates of Analysis are provided for documentation purposes related to in-vitro laboratory research. The compounds referenced are intended exclusively for research applications and are not approved for human consumption, diagnostic, or clinical use. Analytical data is generated by independent third-party laboratories.