Wide Variation in Threshold Cycle Values Clouds the Interpretation of SARS-CoV-2 Infectiousness

Clin Chem. 2021 Dec 30;68(1):253-255. doi: 10.1093/clinchem/hvab145.

William Stokes^{1

2

3}, Jamil N Kanji^{1

2

4

5}, Jia Hu^{6

7}, Nathan Zelyas^{1

2}, Byron M Berenger^{1

5}

¹ Alberta Public Health Laboratory, Alberta Precision Laboratories, Alberta, Canada.
² Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
³ Division of Infectious Diseases, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
⁴ Division of Infectious Diseases, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
⁵ Department of Pathology and Laboratory Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
⁶ Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada.
⁷ Public Health, Alberta Health Services, Alberta, Canada.

No abstract available

Keywords: COVID-19; PCR; SARS-CoV-2; infectiousness; threshold cycle (Ct).

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