Fig. 3

Days after symptom onset for patients tested with LumiraDx SARS-CoV-2 Ag Test and PCR-based method. There were 91.5% (732/800) of the patients tested within 7 days of symptom onset, while 5% (40/800) were tested more than 7 days after symptom onset. Number of days after symptom onset was not known in three patients, and 25* patients were asymptomatic at the time of testing but had a recent documented exposure to a person testing positive for SARS-CoV-2. All of the patients represented in the figure tested negative with the LumiraDx SARS CoV-2 Ag Test. All of the patients represented in the figure were also tested with a PCR based method, and 770/800 (96.3%) and 30/800 (3.8%) of these patients tested negative and positive, respectively. PCR, polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2