| Dokumentenart: | Artikel | ||||
|---|---|---|---|---|---|
| Titel eines Journals oder einer Zeitschrift: | Clinical Laboratory | ||||
| Verlag: | CLIN LAB PUBL | ||||
| Ort der Veröffentlichung: | HEIDELBERG | ||||
| Band: | 63 | ||||
| Nummer des Zeitschriftenheftes oder des Kapitels: | 04/201 | ||||
| Datum: | 2017 | ||||
| Institutionen: | Medizin > Lehrstuhl für Innere Medizin I | ||||
| Identifikationsnummer: |
| ||||
| Stichwörter / Keywords: | ACUTE MYOCARDIAL-INFARCTION; CHEST-PAIN; DEFINITION; DIAGNOSIS; COLLEGE; MARKERS; SYSTEM; STAY; TIME; UNIT; acute myocardial infarction; analytical performance; troponin T; multicentre evaluation; point-of-care testing | ||||
| Dewey-Dezimal-Klassifikation: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin | ||||
| Status: | Veröffentlicht | ||||
| Begutachtet: | Ja, diese Version wurde begutachtet | ||||
| An der Universität Regensburg entstanden: | Ja | ||||
| Dokumenten-ID: | 38479 |
Web of ScienceZusammenfassung
Background: The point-of-care test Roche CARDIAC POC Troponin T (PoC TnT) is an improved assay which has been developed for the Roche cobas h 232 system. Methods: We performed a multicentre evaluation (four sites) to assess the analytical performance of the PoC TnT assay and to compare it with the central laboratory Elecsys (R) troponin T high sensitive (lab cTnT-hs) assay. Results: The relative ...
Zusammenfassung
Background: The point-of-care test Roche CARDIAC POC Troponin T (PoC TnT) is an improved assay which has been developed for the Roche cobas h 232 system. Methods: We performed a multicentre evaluation (four sites) to assess the analytical performance of the PoC TnT assay and to compare it with the central laboratory Elecsys (R) troponin T high sensitive (lab cTnT-hs) assay. Results: The relative mean differences found in method comparisons of PoC TnT vs. lab cTnT-hs ranged from -4.1% to +6.8%. Additionally, there was good concordance between PoC TnT and lab cTnT-hs for the number of samples with troponin T values below the measuring range of 40 ng/L. Lot-to-lot differences of PoC TnT ranged from -8.6% to +4.6%. Within-series coefficients of variation (CV) resulting from 81 ten-fold measurements with patient samples were 9.3%, 11.8%, and 12.9% in the low (40 to < 200 ng/L), medium (200 to < 600 ng/L), and high (600 to 2000 ng/L) measuring range, respectively. Using the system quality control, the mean CV for between-day imprecision was 11.3%. No interference was observed by triglycerides (up to 11.4 mmol/L), bilirubin (up to 376 mu mol/L), hemoglobin (up to 0.12 mmol/L), biotin (up to 30 mu g/L), rheumatoid factor (up to 200 IU/mL), or with 52 standard or cardiovascular drugs at therapeutic concentrations. There was no influence on the results by varying hematocrit values in a range from 25% to 53%. However, interferences with human anti-mouse antibodies were found. No significant influence on the results was found with PoC TnT by using sample volumes between 135 to 165 mu L. High troponin T concentrations up to 500 mu g/L did not lead to false low results, indicating no high-concentration hook effect. No cross-reactivity was found between the PoC TnT assay and human skeletal troponin T up to 1000 mu g/L (< 0.05%). Diagnostic sensitivity and specificity data of a subpopulation (23 patients) of this study are in agreement with results of another large pre-hospital study. Conclusions: The PoC TnT assay showed good analytical performance with excellent concordance with the calibration and reference laboratory method. It should therefore be suitable for its intended use in point-of-care settings.
Metadaten zuletzt geändert: 25 Nov 2020 15:44
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