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Fig. 1 | Thrombosis Journal

Fig. 1

From: Monitoring heparin therapy: stability of two different anti-Xa assays using blood samples collected in citrate-containing and CTAD tubes

Fig. 1

Stability of citrated whole blood samples from patients treated with UFH. Anti-factor Xa activity scatter plots (A and C) and Bland–Altman plots (B and D), and aPTT ratio scatter plots (E and G) and Bland–Altman plots (F and H) after analysis with the Siemens and Stago reagent/analyser combination, respectively. Results are plotted as the difference (y axis) in anti-factor Xa activity or aPTT ratio between the analysis after 6 h (T6WB), 4 h (T4WB) and 1 h (T1WB) of storage at room temperature. *P < 0.05, **P < 0.01, ***P < 0.001, NS: Not significant (ANOVA or non-parametric Friedman test)

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