Article: Evaluation of a new procalcitonin assay for the Siemens ADVIA Centaur with the established method on the B.R.A.H.M.S Kryptor.
2011 Volume 57, Issue 5-6, Page(s) 415–420
Abstract: Background: In this study, we compared the B.R.A.H.M.S Kryptor procalcitonin (PCT) assay ... with the newly developed ADVIA Centaur B.R.A.H.M-S PCT assay. Furthermore, the long-term stability of PCT at - 20 ... Conclusions: The ADVIA Centaur B.R.A.H.M.S PCT assay showed good correlation with the established Kryptor ...
Abstract | Background: In this study, we compared the B.R.A.H.M.S Kryptor procalcitonin (PCT) assay with the newly developed ADVIA Centaur B.R.A.H.M-S PCT assay. Furthermore, the long-term stability of PCT at - 20 degrees C was assessed. Methods: Samples from 97 patients with lower respiratory tract infections were retested on both systems and compared with Passing-Bablok regression over two clinically relevant cutoff ranges for PCT, 0 - 2.0 microg/L and > 2.0 microg/L. Results: After storage for 2.5 to 4 years, PCT levels in patient sera declined only 3.7%. Passing-Bablok regression analysis of the total sample range (n = 97) showed that both methods correlated well (r = 0.9944), although with a deviation from the line of identity (y = 0.880x - 0.025 microg/L). Comparison of both methods within the clinically important interval of 0 - 2.0 microg/L showed acceptable correlation (y = 0.943x + 0.010 microg/L). Conclusions: The ADVIA Centaur B.R.A.H.M.S PCT assay showed good correlation with the established Kryptor method. Therefore, this new technique can be used in clinical routine with the same clinical interpretation. |
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MeSH term(s) | Antibodies, Monoclonal/immunology ; Automation ; Biomarkers ; Blood Preservation ; Calcitonin/blood ; Calcitonin Gene-Related Peptide ; Community-Acquired Infections/blood ; Cryopreservation ; Humans ; Immunoassay/instrumentation ; Luminescent Measurements/instrumentation ; Pneumonia/blood ; Protein Precursors/blood ; Reproducibility of Results ; Sensitivity and Specificity ; Time Factors |
Chemical Substances | Antibodies, Monoclonal ; Biomarkers ; CALCA protein, human ; Protein Precursors ; Calcitonin Gene-Related Peptide (83652-28-2) ; Calcitonin (9007-12-9) |
Language | English |
Publishing date | 2011 |
Publishing country | Germany |
Document type | Comparative Study ; Journal Article ; Validation Studies |
ZDB-ID | 1307629-2 |
ISSN | 1433-6510 ; 0941-2131 |
ISSN | 1433-6510 ; 0941-2131 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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