The effect of selected pre‐analytical phase variables on plasma thromboxane A2 measurements in humans. Issue 1 (22nd August 2012)

• Record Type: Journal Article
• Authors: Sadilkova, L.; Paluch, Z.; Mottlova, J.; Bednar, F.; Alusik, S.
• Is Part Of: International journal of laboratory hematology. Volume 35:Issue 1(2013:Feb.)
• Page Start: 92
• Page End: 100
• Publication Date: 2012-08-22
• Subjects: Hematology -- Periodicals; Blood -- Diseases -- Periodicals; Hematology -- Periodicals; 616.15005
• DOI: 10.1111/j.1751-553X.2012.01458.x
• Languages: English
• ISSNs: 1751-5521

Abstract

<abstract abstract-type="main" id="ijlh1458-abs-0001"> <title>Summary</title> <sec id="ijlh1458-sec-0001" sec-type="section"> <title>Aims</title> <p>Platelet function testing is often affected by the existence of different pre‐analytical variables that can cause platelet activation. The aim of this study was to assess the effect of such variables that are present when samples are taken (different anticoagulants, incubation temperature, and storage conditions) to select those which enable to reach optimal range of measured plasma concentrations of the two stable thromboxane A<sub>2</sub> metabolites, that is, thromboxane B<sub>2</sub> (TxB<sub>2</sub>) and 11‐dehydrothromboxane B<sub>2</sub> (11‐dTxB<sub>2</sub>).</p> </sec> <sec id="ijlh1458-sec-0002" sec-type="section"> <title>Materials and Methods</title> <p>For the purpose of this study, whole blood samples obtained from 20 volunteers were screened for TxB<sub>2</sub> and 11‐dTxB<sub>2</sub> concentrations using commercial EIA kits (Cayman Chemicals™; Neogen™) in relation to the effect of different anticoagulants, using different incubation temperatures and storage conditions.</p> </sec> <sec id="ijlh1458-sec-0003" sec-type="section"> <title>Results</title> <p>Trisodium citrate has been shown not to be affecting the TxB<sub>2</sub> and 11‐dTxB<sub>2</sub> concentrations compared with the values measured in the serum. Incubation of the samples for 1 h at 37 °C and freezing at −20 °C or −80 °C give the most suitable concentration range of both thromboxanes in the used EIA measurement.</p> </sec> <sec id="ijlh1458-sec-0004" sec-type="section"> <title>Conclusion</title> <p>This study describes the setup of such pre‐analytical phase conditions that enable the screening of platelet function in terms of the plasma concentrations of TxB<sub>2</sub> and 11‐dTxB<sub>2</sub> in selected EIA measurement.</p> </sec> </abstract>