Is heparin plasma suitable for the determination of B-type natriuretic peptide on the Beckman-Coulter Access 2?

Clinical Chemistry and Laboratory Medicine : CCLM
Humberto SantosAlain Lavoinne

Abstract

The use of heparin as an alternative to EDTA in the production of plasma samples is of particular interest for B-type natriuretic peptide (BNP) measurements. Lithium heparin is now widely used for the determination of biochemical parameters, including cardiac markers. The goal of this study was to determine the feasibility of measuring BNP using heparin plasma instead of EDTA plasma with the Access 2 system (Beckman-Coulter). BNP was determined in heparin plasma and EDTA plasma from 24 patients within 1 h of blood collection. Additional measurements were performed with heparin plasma, every hour for the first 4 h, and then 8 h after the collection of blood that was stored at room temperature. At H(0), the observed BNP concentrations in heparin plasma were much higher (mean values 65% higher) than those in EDTA plasma. Using predetermined thresholds, this difference would lead to 30% discordance between samples in heparin and EDTA. BNP stability decreased over time in heparin plasma: immunoreactivity decreased approximately by 30% during the first 2 h and by 60% after 8 h. Heparin plasma does not seem to be a suitable alternative to EDTA plasma for measurement of BNP using the Access 2 system, even if measurements are performed ...Continue Reading

References

Jan 22, 2004·Clinica Chimica Acta; International Journal of Clinical Chemistry·Alexander BelenkyBarry I Bluestein
Feb 18, 2005·American Journal of Clinical Pathology·Mindy L RawlinsWilliam L Roberts
Sep 12, 2007·Journal of Clinical Laboratory Analysis·Giuseppe LippiGian Cesare Guidi
Mar 15, 2008·Critical Pathways in Cardiology·Mandeep R Mehra, Alan Maisel

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Citations

Sep 30, 2010·Clinica Chimica Acta; International Journal of Clinical Chemistry·Elisabetta StennerBruno Biasioli
Jan 22, 2013·Clinical Chemistry and Laboratory Medicine : CCLM·Angelika Hammerer-LercherPäivi Laitinen
Jan 11, 2014·Clinical Chemistry and Laboratory Medicine : CCLM·Kevin M GoodeJohn G F Cleland
May 7, 2013·Clinical Chemistry and Laboratory Medicine : CCLM·Marcel J W JanssenNaomi Willemse

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