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. 2023 Mar 15;8(3):495–530. doi: 10.1016/j.cpha.2023.03.002

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Fig. 2 — Algorithms for testing to detect SARS-CoV-2 in symptomatic and asymptomatic individuals. (A) Preferred testing algorithm for individuals with COVID-19-like symptoms. (B) Testing algorithm for individuals with COVID-19-like symptoms when molecular testing is not available, or results are delayed. (C) Testing algorithm for COVID-19 case finding among asymptomatic individuals.

Reprinted with permission from Elsevier. The Lancet, 2022, 399: 757-68.