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Reenen AV, Berger M, Moreau E, Bekx E, Bruinink T, Kemper D, Lippen LV, Weusten J, Mrakovic A, Michielsen E, Vissers J, Theije FD, Nieuwenhuis J, Semjonow V, Mair J. Analytical performance of a single epitope B-type natriuretic peptide sandwich immunoassay on the Minicare platform for point-of-care diagnostics. Pract Lab Med 2019; 15:e00119. [PMID: 30984810 PMCID: PMC6444177 DOI: 10.1016/j.plabm.2019.e00119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 01/23/2019] [Accepted: 03/14/2019] [Indexed: 12/17/2022] Open
Abstract
Point-of-care B-type natriuretic peptide (BNP) testing with adequate analytical performance has the potential to improve patient flow and provide primary care givers with easy-to-use advanced diagnostic tools in the management of heart failure. We present the analytical evaluation of the Minicare BNP immunoassay under development on the Minicare I-20 platform for point-of-care testing. Analytical performance was evaluated using EDTA venous whole blood, EDTA plasma and capillary whole blood. Method comparison with a lab-testing system was performed using samples from 187 patients. Normal values were determined based on 160 healthy adults, aging from 19 to 70 years. Limit of blank (LoB), limit of detection (LoD) were determined to be 3.3 ng/L, 5.8 ng/L. Limit of quantitation (LoQ) in whole blood at 20% and 10% coefficient of variation (CV) was found < 9 ng/L and <30 ng/L respectively without significant differences between EDTA whole blood and EDTA plasma. Total CV was found to be from 6.7% to 9.7% for BNP concentrations between 92.6 and 3984 ng/L. The sample type comparison study demonstrated correlation coefficients between 0.97 and 0.99 with slopes between 1.03 and 1.09 between the different samples. Method comparison between Minicare BNP and Siemens ADVIA Centaur BNP demonstrated a correlation coefficient of 0.92 with a slope of 1.06. The 97.5% URL of a healthy population was calculated to be 72.6 ng/L. The Minicare BNP assay is a robust, easy-to-use and sensitive test for rapid determination of BNP concentrations that can be used in a near-patient setting.
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Key Words
- Analytical performance
- B-type natriuretic peptide
- BNP, B-type Natriuretic Peptide
- CI, confidence interval
- CLSI, clinical laboratory standards institute
- CV, coefficient of variation
- Capillary blood
- Diagnosis
- EDTA, ethylene-diamine-tetraacetic acid
- HAMA, human anti-mouse antibody
- HF, heart failure
- Heart failure
- K2-EDTA, dipotassium ethylene-diamine-tetraacetic acid
- Li-heparin, lithium heparin
- LoB, limit of blank
- LoD, limit of detection
- LoQ, limit of quantitation
- NP, Natriuretic Peptide
- NYHA, New York Heart Association
- POC, point-of-care
- Point-of-care
- RF, rheumatoid factor
- RFID, radiofrequency identification
- RT, room temperature
- SD, standard deviation
- URL, upper reference limit
- fTIR, frustrated total internal reflection
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Affiliation(s)
- Alexander van Reenen
- Minicare BV, Eindhoven, the Netherlands.,Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | - Mario Berger
- Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | | | - Edwin Bekx
- Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | - Tom Bruinink
- Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | | | | | - Jos Weusten
- Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | - Anita Mrakovic
- Department of Internal Medicine III - Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Joost Vissers
- Future Diagnostics Solutions, Wijchen, the Netherlands
| | - Femke de Theije
- Minicare BV, Eindhoven, the Netherlands.,Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | - Jeroen Nieuwenhuis
- Minicare BV, Eindhoven, the Netherlands.,Philips BG Emerging Businesses, Eindhoven, the Netherlands
| | | | - Johannes Mair
- Department of Internal Medicine III - Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Austria
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