This legislation directs the Secretary of Health and Human Services to undertake a comprehensive study regarding fentanyl testing in hospital emergency departments for patients experiencing an overdose. The study will assess the frequency of such testing, associated costs , and the potential benefits and risks for patients, including impacts on confidentiality and the patient-physician relationship. Following the study's completion within one year, the Secretary is required to issue guidance within six months. This guidance will address whether fentanyl testing should become a routine procedure in emergency departments. It will also provide recommendations on ensuring clinicians are aware of substances tested for and how fentanyl testing may affect future overdose risk and general health outcomes.