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  • Title: Analytical performance and user-friendliness of four commercially available point-of-care devices for C-reactive protein.
    Author: Van Hoovels L, Massa B, Stavelin A, De Meyer H, De Schrijver P, Van Laethem V, Barglazan D, Gruson D, Hopstaken R, Peeters B, Van Hoof V, Verdonck A, Verbakel JY.
    Journal: Clin Chim Acta; 2024 Jun 15; 560():119737. PubMed ID: 38768699.
    Abstract:
    INTRODUCTION: Proper implementation of Point-of-Care testing (POCT) for C-reactive protein (CRP) in primary care can decrease the inappropriate use of antibiotics, thereby tackling the problem of growing antimicrobial resistance. OBJECTIVE: The analytical performance and user-friendliness of four POCT-CRP assays were evaluated: QuikRead go easy, LumiraDx, cobas b 101 and Afinion 2. MATERIALS AND METHODS: Imprecision was evaluated using plasma pools in addition to manufacturer-specific control material. Trueness was assessed by verification of traceability to ERM-DA474/IFCC in parallel to method comparison towards the central laboratory CRP method (cobas c 503) using i) retrospectively selected plasma samples (n = 100) and ii) prospectively collected capillary whole blood samples (n = 50). User-friendliness was examined using a questionnaire. RESULTS: Between-day imprecision on plasma pools varied from 4.5 % (LumiraDx) to 11.5 % (QuikRead). Traceability verification revealed no significant difference between cobas c 503 CRP results and the ERM-DA474/IFCC certified value. cobas b 101 and Afinion achieved the best agreement with the central laboratory method. LumiraDx and QuikRead revealed a negative mean difference, with LumiraDx violating the criterion of > 95 % of POCT-CRP-results within ± 20 % of the comparison method. Regarding user-friendliness, Afinion obtained the highest Likert-scores. CONCLUSION: The analytical performance and user-friendliness of POCT-CRP devices varies among manufacturers, emphasizing the need for quality assurance supervised by a central laboratory.
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