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Cohorts of dd-cfDNA plasma number of samples from the US that were categorized as “low risk for rejection” (< 0.5%) and of indeterminate risk with 0.5% to 1.0% and > 1.0% categories during the course of coronavirus disease 2019 (COVID-19). The March-April nadir in total number of samples occurred prior to implementation of home remote phlebotomy.
