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1
University of Lübeck, Medizinische Klinik II, 23528 Lübeck, Germany.
2
University of Heidelberg, Innere Medizin III,
D-69115 Heidelberg, Germany.
3
Boehringer Mannheim, D-68298 Mannheim, Germany
a Address correspondence to this author at: Medizinische Universität zu Lübeck, Medizinische Klinik II, Ratzeburger Allee 160, 23538 Lübeck, Germany. Fax 49-451-5006437.
Background: In the evaluation of chest pain patients, whole blood bedside assays of highly specific cardiac molecules may be an attractive alternative to centralized clinical chemistry testing. We now report on an optimized test strip device for cardiac troponin T (cTnT) that can be analyzed by a cardiac reader for quantitative assessment of the test result.
Methods and Results: The cTnT test strip reader measures, via a CCD camera, the reflectance of the signal line. For quantitative analysis, a calibration curve was constructed from 1030 samples of 252 consecutive patients with acute coronary syndromes. In a method comparison of 140 samples, the quantitative results of the cTnT test strip reader correlated closely with the results of the cTnT ELISA (r = 0.98; y = 0.85x + 0.002). Within-run and day-to-day (n = 10) mean CVs were between 11% and 16%, respectively. The cross-reactivity with skeletal troponin T was <0.02%. In patients with myocardial infarction, 45% and 91% of all samples were positive on admission and at 4–8 h after the onset of symptoms, respectively. ROC curve analysis demonstrated a comparable efficiency of the cTnT test strip reader and the laboratory-based cTnT ELISA in patients with suspected myocardial infarction.
Conclusions: It is now possible to quantitatively determine cTnT at the patient's bedside with a rapid and convenient test device. This will facilitate the diagnostic work up of patients with suspected myocardial cell necrosis.© 1999 American Association for Clinical Chemistry
The following articles in journals at HighWire Press have cited this article:
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  C. W. Hamm, H. Möllmann, J.-P. Bassand, and F. van de Werf CHAPTER 16 Acute Coronary Syndromes ESC Textbook of Cardiovascular Medicine, January 1, 2009; 2(1): med-9780199566990-chapter - med-9780199566990-chapter. [Abstract] [Full Text] [PDF]
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 B. Metzler, B. Haubner, E. Conci, J. Voelkl, J. Jehle, M. Bauer, D. Wolf, O. Pachinger, and Q. Xu Myocardial ischaemia-reperfusion injury in haematopoietic cell-restricted {beta}1 integrin knockout mice Exp Physiol, July 1, 2008; 93(7): 825 - 833. [Abstract] [Full Text] [PDF]
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 Authors/Task Force Members, J.-P. Bassand, C. W. Hamm, D. Ardissino, E. Boersma, A. Budaj, F. Fernandez-Aviles, K. A.A. Fox, D. Hasdai, E. M. Ohman, et al. Guidelines for the diagnosis and treatment of non-ST-segment elevation acute coronary syndromes: The Task Force for the Diagnosis and Treatment of Non-ST-Segment Elevation Acute Coronary Syndromes of the European Society of Cardiology Eur. Heart J., July 1, 2007; 28(13): 1598 - 1660. [Full Text] [PDF]
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 S. B. Rosalki, R. Roberts, H. A. Katus, E. Giannitsis, J. H. Ladenson, and F. S. Apple Cardiac Biomarkers for Detection of Myocardial Infarction: Perspectives from Past to Present Clin. Chem., November 1, 2004; 50(11): 2205 - 2213. [Abstract] [Full Text] [PDF]
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 K. Okamatsu, M. Takano, S. Sakai, F. Ishibashi, R. Uemura, T. Takano, and K. Mizuno Elevated Troponin T Levels and Lesion Characteristics in Non-ST-Elevation Acute Coronary Syndromes Circulation, February 3, 2004; 109(4): 465 - 470. [Abstract] [Full Text] [PDF]
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 M. Panteghini Acute Coronary Syndrome: Biochemical Strategies in the Troponin Era Chest, October 1, 2002; 122(4): 1428 - 1435. [Abstract] [Full Text] [PDF]
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 M. J. Quinn and D. J. Moliterno Troponins in Acute Coronary Syndromes: More TACTICS for an Early Invasive Strategy JAMA, November 21, 2001; 286(19): 2461 - 2462. [Full Text] [PDF]
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C. W. Hamm Cardiac Biomarkers for Rapid Evaluation of Chest Pain Circulation, September 25, 2001; 104(13): 1454 - 1456. [Full Text] [PDF]
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E. Giannitsis, M. Muller-Bardorff, S. Lehrke, U. Wiegand, R. Tolg, B. Weidtmann, F. Hartmann, G. Richardt, and H. A. Katus Admission Troponin T Level Predicts Clinical Outcomes, TIMI Flow, and Myocardial Tissue Perfusion After Primary Percutaneous Intervention for Acute ST-Segment Elevation Myocardial Infarction Circulation, August 7, 2001; 104(6): 630 - 635. [Abstract] [Full Text] [PDF]
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 B. Metzler, J. Mair, A. Lercher, C. Schaber, F. Hintringer, O. Pachinger, and Q. Xu Mouse model of myocardial remodelling after ischemia: role of intercellular adhesion molecule-1 Cardiovasc Res, February 1, 2001; 49(2): 399 - 407. [Abstract] [Full Text] [PDF]
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F. S. Apple, F. P. Anderson, P. Collinson, R. L. Jesse, M. C. Kontos, M. A. Levitt, E. A. Miller, and M. M. Murakami Clinical Evaluation of the First Medical Whole Blood, Point-of-Care Testing Device for Detection of Myocardial Infarction Clin. Chem., October 1, 2000; 46(10): 1604 - 1609. [Abstract] [Full Text] [PDF]
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