To amend the Public Health Service Act to require the development of a diagnostic testing preparedness plan to be used during public health emergencies, and for other purposes.

HR 3795 requires the U.S. Department of Health and Human Services (specifically the Assistant Secretary for Preparedness and Response) to create and regularly update a national plan for rapid diagnostic testing during public health emergencies like pandemics. The plan must cover developing, authorizing, scaling, and distributing testing tools and lab capacity, with specific focus on new threats like emerging diseases or bioterrorism. It mandates public-private coordination between government agencies and private labs, manufacturers, and distributors to ensure efficient response. The plan must be made public and include a congressional report evaluating its effectiveness during emergencies. This bill directly affects federal health agencies and private-sector testing providers by establishing a structured framework for emergency testing preparedness.