"Since no quantified virus isolates of the 2019-nCoV were available for CDC use at the time the test was developed and this study conducted, assays designed for detection of the 2019-nCoV RNA were tested with characterized stocks of in vitro transcribed full length RNA"
"... no quantified virus isolates of the 2019-nCoV were available for CDC use ..."
https://gab.com/robinmonotti/posts/105734791834850133
Page 42, 2ⁿᵈ sentence of the 2ⁿᵈ paragraph: