“The current diagnostic testing regulatory system—in which tests are regulated according to where they are developed and used, rather than the risk they pose if they are inaccurate—creates double standards and potential loopholes that undermine public health objectives.” OR “The Centers for Medicare & Medicaid Services (CMS) regulates labs but has limited insight into the quality, reliability, or usefulness of LDTs, including whether patients have been harmed as a result of their use.”