Our FDA team recently posted a LawFlash about the US Department of Health and Human Services (HHS) August 19 announcement, Rescission of Guidances and Other Informal Issuances Concerning Premarket Review of Laboratory Developed Tests, in which it stated that the FDA would not require premarket review of laboratory developed tests (LDTs) without notice-and-comment rulemaking. The announcement has implications not only for LDTs intended for SARS-CoV-2 testing, but also for LDTs intended for other purposes, such as pharmacogenetic testing and direct-to-consumer testing.