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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Arterioscler Thromb Vasc Biol. 2016 Jul 7;36(9):1847–1853. doi: 10.1161/ATVBAHA.116.308023

Figure 1. Standard curves of FXa inactivation induced by heparin.

Figure 1

(A) Representative data showing absorbance readings of residual FXa at logarithmically increasing heparin weights. Slopes of curve between 2–6 min (green area) were determined. (B) Standard curve showing linear correlation between the slope of curve (generated from the green area in A) and Log [heparin weights]. (C) Standard curve showing linear correlation between the absorbance at 16 min (end point in A) and the inactivated FXa units. The results are mean ± SEM of 6 independent assays using new heparin batches for each assay run.