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    Apr 22, 2021
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    Evaluation of the Nova StatSensor® XpressTM Creatinine Point-Of-Care Handheld Analyzer

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    Kosack et al - 2015 - Evaluation ...
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    Authors
    Kosack, Cara Simone
    de Kieviet, Wim
    Bayrak, Kubra
    Milovic, Anastacija
    Page, Anne Laure
    Issue Date
    2015-04-17
    
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    Journal
    PloS One
    Abstract
    Creatinine is a parameter that is required to monitor renal function and is important to follow in patients under treatment with potentially toxic renal drugs, such as the anti-HIV drug Tenofovir. A point of care instrument to measure creatinine would be useful for patients monitoring in resource-limited settings, where more instruments that are sophisticated are not available. The StatSensor Xpress Creatinine (Nova Biomedical Cooperation, Waltham, MA, USA) point of care analyzer was evaluated for its diagnostic performance in indicating drug therapy change. Creatinine was measured in parallel using the Nova StatSensor Xpress Creatinine analyzer and the Vitros 5,1FS (Ortho Clinical Diagnostics, Inc, Rochester, USA), which served as reference standard. The precision (i.e., repeatability and reproducibility) and accuracy of the StatSensor Xpress Creatinine analyzer were calculated using a panel of specimens with normal, low pathological and high pathological values. Two different Nova StatSensor Xpress Creatinine analyzers were used for the assessment of accuracy using repeated measurements. The coefficient of variation of the StatSensor Xpress Creatinine analyzers ranged from 2.3 to 5.9% for repeatability and from 4.2 to 9.0% for between-run reproducibility. The concordance correlation agreement was good except for high values (>600 µmol/L). The Bland-Altman analysis in high pathological specimens suggests that the Nova StatSensor Xpress Creatinine test tends to underestimate high creatinine values (i.e., >600 µmol/L). The Nova StatSensor Xpress Creatinine analyzers showed acceptable to good results in terms of repeatability, inter-device reproducibility and between-run reproducibility over time using quality control reagents. The analyzer was found sufficiently accurate for detecting pathological values in patients (age >10 year) and can be used with a moderate risk of misclassification.
    Publisher
    Public Library of Science
    URI
    http://hdl.handle.net/10144/550548
    DOI
    10.1371/journal.pone.0122433
    PubMed ID
    25886375
    Language
    en
    ISSN
    1932-6203
    ae974a485f413a2113503eed53cd6c53
    10.1371/journal.pone.0122433
    Scopus Count
    Collections
    Laboratory

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