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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Editorial Board Member: Gillery, Philippe / Kazmierczak, Steven / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Schlattmann, Peter / Whitfield, John B.

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IMPACT FACTOR 2013: 2.955
Rank 5 out of 29 in category Medical Laboratory Technology in the 2013 Thomson Reuters Journal Citation Report/Science Edition

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Age- and gender-specific brain natriuretic peptide (BNP) reference ranges in primary care

1 / Johannes J. Hoffmann2 / Lianne Ringoir1 / Karin C. Nabbe3 / Jos W. Widdershoven1, 4 / Victor J. Pop1

1Center of Research on Psychology in Somatic Diseases (CoRPS), Department of Medical and Clinical Psychology, Tilburg University, Tilburg, The Netherlands

2Medical and Scientific Affairs Hematology, Abbott Diagnostics Europe, Wiesbaden-Delkenheim, Germany

3Diagnostiek voor U, Eindhoven, The Netherlands

4Department of Cardiology, TweeSteden Ziekenhuis, Tilburg, The Netherlands

Corresponding author: Josephine M. Keyzer, Department of Medical and Clinical Psychology, CoRPS, Tilburg University, PO Box 90153, 5000 LE Tilburg, The Netherlands, Phone: +31 618049590, E-mail:

Citation Information: Clinical Chemistry and Laboratory Medicine (CCLM). Volume 52, Issue 9, Pages 1341–1346, ISSN (Online) 1437-4331, ISSN (Print) 1434-6621, DOI: 10.1515/cclm-2013-0791, April 2014

Publication History

Received:
2013-09-20
Accepted:
2014-03-31
Published Online:
2014-04-29

Abstract

Background: Chronic heart failure is a common disease with a high morbidity and mortality. In primary care, brain natriuretic peptide (BNP) is used for excluding heart failure. The Dutch and European Society of Cardiology heart failure guidelines apply two BNP cut-off levels without making distinction for gender and age. The aim of our study was to establish BNP reference ranges for use in primary care.

Methods: We investigated BNP values of 9447 eligible subjects in a primary care laboratory. For establishing the reference ranges in various age and gender classes we used the Bhattacharya method.

Results: Analysis of variance demonstrated that BNP data were significantly dependent on age and gender (p<0.001 and p=0.002, respectively), with the age effect being the strongest. Further, we found that the reference ranges were significantly higher than the cut-off values used in the heart failure guidelines, particularly in elderly subjects. For example, the proportion of individuals with a BNP value higher than the 29 pmol/L cut-off increased from approximately 5% in the youngest group to no less than about 50% in the oldest subjects.

Conclusions: BNP reference ranges need to be age- and gender-specific. When applying a single cut-off, many healthy subjects, especially the elderly, would be falsely diagnosed as having elevated BNP, and referred for further unnecessary diagnostics.

Keywords: Bhattacharya statistics; brain natriuretic peptide (BNP); chronic heart failure; primary care; reference ranges

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