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Analytical performance of 17 commercially available point-of-care tests for CRP to support patient management at lower levels of the health system

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  • Serafina Calarco
  • B Leticia Fernandez-Carballo
  • Thomas Keller
  • Stephan Weber
  • Meike Jakobi
  • Patrick Marsall
  • Nicole Schneiderhan-Marra
  • Sabine Dittrich

Abstract

Accurate and precise point-of-care (POC) testing for C-reactive protein (CRP) can help support healthcare providers in the clinical management of patients. Here, we compared the analytical performance of 17 commercially available POC CRP tests to enable more decentralized use of the tool. The following CRP tests were evaluated. Eight quantitative tests: QuikRead go (Aidian), INCLIX (Sugentech), Spinit (Biosurfit), LS4000 (Lansionbio), GS 1200 (Gensure Biotech), Standard F200 (SD Biosensor), Epithod 616 (DxGen), IFP-3000 (Xincheng Biological); and nine semi-quantitative tests: Actim CRP (ACTIM), NADAL Dipstick (nal von minden), NADAL cassette (nal von minden), ALLTEST Dipstick (Hangzhou Alltest Biotech), ALLTEST Cassette cut-off 10-40-80 (Hangzhou Alltest Biotech), ALLTEST Cassette cut-off 10–30 (Hangzhou Alltest Biotech), Biotest (Hangzhou Biotest Biotech), BTNX Quad Line (BTNX), BTNX Tri Line (BTNX). Stored samples (n = 660) had previously been tested for CRP using Cobas 8000 Modular analyzer (Roche Diagnostics International AG, Rotkreuz, Switzerland (reference standards). CRP values represented the clinically relevant range (10–100 mg/L) and were grouped into four categories ( 80mg/L) for majority of the semi-quantitative tests. Among the eight quantitative POC tests evaluated, QuikRead go and Spinit exhibited better agreement with the reference method, showing slopes of 0.963 and 0.921, respectively. Semi-quantitative tests with the four categories showed a poor percentage agreement for the intermediate categories and higher percentage agreement for the lower and upper limit categories. Analytical performance varied considerably for the semi-quantitative tests, especially among the different categories of CRP values. Our findings suggest that quantitative tests might represent the best choice for a variety of use cases, as they can be used across a broad range of CRP categories.

Suggested Citation

  • Serafina Calarco & B Leticia Fernandez-Carballo & Thomas Keller & Stephan Weber & Meike Jakobi & Patrick Marsall & Nicole Schneiderhan-Marra & Sabine Dittrich, 2023. "Analytical performance of 17 commercially available point-of-care tests for CRP to support patient management at lower levels of the health system," PLOS ONE, Public Library of Science, vol. 18(1), pages 1-19, January.
    • Handle: RePEc:plo:pone00:0267516
    DOI: 10.1371/journal.pone.0267516
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    1. Giorgia Sulis & Pierrick Adam & Vaidehi Nafade & Genevieve Gore & Benjamin Daniels & Amrita Daftary & Jishnu Das & Sumanth Gandra & Madhukar Pai, 2020. "Antibiotic prescription practices in primary care in low- and middle-income countries: A systematic review and meta-analysis," PLOS Medicine, Public Library of Science, vol. 17(6), pages 1-20, June.
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