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. 2021 Feb 18;100(2):115350. doi: 10.1016/j.diagmicrobio.2021.115350

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Fig 2 — Follow-up of borderline SARS-CoV-2 rRT-PCR results. (A) Ten out of 107 patients (9.35%) tested positive within 96 hours after a borderline SARS-CoV-2 test result. (B) Follow-up viral loads were significantly higher in SARS-CoV-2-positive patients (Wilcoxon signed rank test). (C) Patients with a positive SARS-CoV-2 test result within 96 hours after a borderline test result, did not experience more often COVID-19 symptoms upon first presentation compared to patients that turned out SARS-CoV-2 negative in the follow-up test (Fischer's exact test).