In 2001, the Scientific and Standardization Subcommittee on DIC of the International Society of Thrombosis and Hemostasis (ISTH) laid down guidelines for the diagnosis of overt and nonovert DIC. 7 Diagnostic criteria for nonovert DIC includes additional parameters such as antithrombin (AT), protein C, thrombin-antithrombin (TAT) complexes, or soluble fibrin monomer (FM) complexes (SFMCs).