The Emergency Response Branch (ERB) has developed several highly-specific and sensitive methods that require the highest quality reagents to meet CLIA specifications. Many of these methods rely on the specificity and reproducibility of the BioPorto butyrylcholinesterase antibody. These CLIA standards require antibody specificity and quality that only BioPorto can provide. Other companies have been considered, such as Thermo Scientific, but they redistribute the BioPorto antibody and cannot provide it in the quantities required by the ERB within our timeline. Purchasing this specific product ensures continuity of branch methodology and continual adherence to CLIA standards.