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. 2021 May 8;58:101742. doi: 10.1016/j.mcp.2021.101742

Fig. 1.

Fig. 1

Analytical sensitivity of the ID NOW COVID-19 system as determined by binary logistic regression. Positivity rate as well as the 95% CI are plotted vs the CT value for each specimen (blue circles). Red stars indicate specimens from which SARS-CoV-2 could be grown in cell culture, and the red line shows the virus load of 106 genome copies per mL of specimen actually accepted as necessary limit for infectious specimens. The green line indicates the 50% detection probability.