Angela D. Hamblin, Karen Cairns, David M. Keeling. The use of age-dependent D-dimer cut-off values to exclude deep vein thrombosis. Reply to “Using an age-dependent D-dimer cut-off value increases the number of older patients in whom deep vein thrombosis can be safely excluded”. Haematologica 2012;97(10):1507-13. Haematologica 2012;97(11):e43-e44; https://doi.org/10.3324/haematol.2012.072231.