In the face of a public health emergency, important first steps to expand testing capacity include relaxing and streamlining regulatory requirements and procedures. Local public health laboratories and academic diagnostic laboratories in the United States are being rapidly enabled to perform EUA-granted commercial assays and laboratory-developed tests using research use–only reagents (61). University research laboratories could also add capacity, although concerns exist regarding quality control and the absence of protocols for managing clinical specimens. Flexibility regarding nucleic acid extraction methods and amplification instruments when using CDC protocols is being introduced (34). National agencies are expeditiously making materials for test development and validation available to clinical laboratories and diagnostic test manufacturers.