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  • Title: Myeloperoxidase concentrations in EDTA-plasma of healthy subjects are discordant with concentrations in heparin-plasma and serum.
    Author: Scheffer PG, van der Zwan LP, Schindhelm RK, Vermue HP, Teerlink T.
    Journal: Clin Biochem; 2009 Sep; 42(13-14):1490-2. PubMed ID: 19524564.
    Abstract:
    OBJECTIVES: To examine the effect of blood anticoagulation type on the myeloperoxidase (MPO) concentration. DESIGN AND METHODS: MPO was measured in EDTA-plasma and matched heparin-plasma and serum samples collected from healthy volunteers. RESULTS: MPO concentrations in heparin-plasma and serum were higher than in EDTA-plasma (both P<0.001). MPO in EDTA-plasma was not significantly correlated with MPO in either heparin-plasma or serum. CONCLUSIONS: For MPO measurements, EDTA-plasma is the preferred specimen as it appears unaffected by ex vivo release of MPO from leukocytes.
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