Workflow
With increasing sample numbers, it is crucial to implement a new assay into routine laboratory workflows that already exist for diagnostic testing of other pathogens. Sample preparation and RNA extraction were carried out at BSL2 level under a safety class 2 cabinet wearing FFP3 filter masks following the WHO recommendations [8]. Samples arriving at our laboratory before 10:00 h were analysed on the same day and results were reported 6–7 h later to local health authorities (Figure 3). Our daily test capacity was ca 80 samples. It should be taken into account that well trained and experienced personnel is needed and seasonal pathogens, e.g. influenza and noroviruses, had to be analysed in parallel. Overall, we managed to report the results for 97% of samples within the same day.
Figure 3  Flowchart and routine timeline of the SARS-CoV-2 diagnostic workflow at the LGL, Bavaria, February 2020
LGL: Bavarian Health and Food Safety Authority.