Analytical performance of a sensitive assay for cardiac troponin I with loci™ technology
To confirm the analytical performance of the Dimension Vista LOCI troponin I assay (cTnI). Limit of blank (LoB), limit of detection (LoD), limit of quantitation (LoQ) with a 10% coefficient of variation (CV), linearity, precision, method comparison, and 99th percentile upper reference limits (URL) w...
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Veröffentlicht in: | Clinical biochemistry 2010-08, Vol.43 (12), p.998-1002 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | To confirm the analytical performance of the Dimension Vista LOCI troponin I assay (cTnI).
Limit of blank (LoB), limit of detection (LoD), limit of quantitation (LoQ) with a 10% coefficient of variation (CV), linearity, precision, method comparison, and 99th percentile upper reference limits (URL) were analyzed. Endogenous analytes and rheumatoid factor (RF) were tested for assay interference.
The 99th percentile was 0.022
µg/L (CV
=
14%) and the LoQ was 0.036
µg/L. The ratio of 10% CV concentration to 99th percentile was 1.63. Linearity extended from 0 to 44.36
µg/L. The method comparison equation was Dimension® Vista™
=
0.94 (Dimension® RxL)
+
0.00
µg/L with bias at low levels. No interference was detected.
This study shows acceptable performance characteristics of the LOCI cTnI assay on Dimension® Vista™ to diagnosis and risk stratification of patients with acute coronary syndrome symptoms. |
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ISSN: | 0009-9120 1873-2933 |
DOI: | 10.1016/j.clinbiochem.2010.04.073 |