This is a time series dataset that includes viral COVID-19 laboratory test [Polymerase chain reaction (PCR)] results from over 1,000 U.S. laboratories and testing locations including commercial and reference laboratories, public health laboratories, hospital laboratories, and other testing locations. The data in this dataset are representative of diagnostic specimens being tested - not individual people - and excludes serology tests where possible. The data reflects the majority, but not all, of COVID-19 testing being conducted in the United States. Data is gotten from data reported directly to State health departments via COVID-19 electronic laboratory reporting (CELR), or a combination of commercial labs, public health labs, and in-house hospital labs.