In this issue of Clinics in Laboratory Medicine, guest editors Drs. Jennifer Dien Bard and Esther Babady bring their considerable expertise to the topic of Diagnostics Stewardship in Molecular Microbiology: From At-Home Testing to Next Generation Sequencing. Molecular testing for infectious diseases diagnostics is quickly expanding beyond clinical microbiology laboratories, while higher complexity tests based on next generation sequencing are now available for infectious diseases diagnosis. Diagnostic stewardship, led by microbiology experts in collaboration with clinicians and other healthcare workers, is critical in ensuring responsible and judicious use of these tests. In this issue, top experts in the field address practical challenges and provide guidance for diagnostic stewardship of molecular infectious disease diagnostics tests, from point-of-care to next generation sequencing.