Development of a novel, N-Terminal-proBNP (NT-proBNP) assay with a low detection limit
| Autor: | Johann Karl, Kerstin Krueger, Erasmus Huber, J Schenk, Andreas Gallusser, Anneliese Borgya, W Rollinger |
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| Rok vydání: | 1999 |
| Předmět: |
Analyte
Digoxin Digitoxin Bilirubin Coefficient of variation Clinical Biochemistry Coronary Disease Nerve Tissue Proteins Sensitivity and Specificity chemistry.chemical_compound Natriuretic Peptide Brain medicine Humans Protein Precursors Edetic Acid Whole blood Chelating Agents Detection limit Immunoassay Chromatography medicine.diagnostic_test Antibodies Monoclonal Reproducibility of Results General Medicine Peptide Fragments chemistry Chemistry Clinical Calibration Biomarkers medicine.drug |
| Zdroj: | Scandinavian Journal of Clinical and Laboratory Investigation. 59:177-181 |
| ISSN: | 0036-5513 |
| DOI: | 10.3109/00365519909168341 |
| Popis: | A novel, highly sensitive and specific N-Terminal-proBNP (NT-proBNP) assay based on a sandwich format has been developed. The assay time is below 2 hours and no extraction process is needed. The calibration curve covers a NT-proBNP concentration range from 0 pmol/L up to 600 pmol/L. The analytical detection limit of the assay was estimated to be 2.7 pmol/L (3 SD). The intra-assay coefficient of variation is 5.7% (at 50 pmol/L) and 6.1% (at 250 pmol/L), while the inter-assay CVs are 15.8% (15 pmol/L) and 8.2% (250 pmol/L). There is no significant interference by bilirubin (up to 900 mumol/L), haemoglobin (up to 10 g/L), rheumatoid factors (up to 975 IU/mL), triglycerides (up to 20.5 mmol/L), biotin (up to 50 micrograms/L), digoxin (up to 100 micrograms/L) and digitoxin (up to 200 micrograms/L). The analyte NT-proBNP is fully stable in whole blood over 3 days and in EDTA-plasma over 24 hours. This good stability of NT-proBNP compared to other less stable natriuretic peptides is a significant advantage and a main prerequisite for a routine diagnostic marker. Preliminary results of using this new assay in clinical studies for diagnosing and monitoring left ventricular dysfunction demonstrate that there is a significant gain in diagnostic validity. |
| Databáze: | OpenAIRE |
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