Fig. 3
From: Sensitive and specific serological ELISA for the detection of SARS-CoV-2 infections
Serum samples incorrectly identified as negative and positive by the Euroimmun ELISA. a Among the 68 samples collected more than 14 days after symptom onset or a positive PCR test were seven samples missed (false-negative). b Ten samples detected as false-positive among 1500 samples collected before 2015 in our in-house N-protein ELISA (x-axis) were tested using the Euroimmun ELISA (y-axis). Borderline areas were 0.8–1.1 for the Euroimmun ELISA and 20–30% for the in-house ELISA, as indicated in grey