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Table 5 Association between self-reported days of symptoms and RT-qPCR SARS-CoV-2 positive patients and colorimetric RT-LAMP performance

From: Essential properties and pitfalls of colorimetric Reverse Transcription Loop-mediated Isothermal Amplification as a point-of-care test for SARS-CoV-2 diagnosis

Assay type

Group

Samples

Days of symptoms

RT-qPCR

Ct < 30

117

5.53 ± 0.36*

Between 30 and 35

39

7.28 ± 0.58

Colorimetric RT-LAMP

Positive

115

5.36 ± 0.35**

Intermediate/negative

41

7.63 ± 0.59

  1. RT-qPCR was divided into Ct < 30 and between 30 and 35
  2. *p < 0.05; **p < 0.01