TTP is mediated by ADAMTS-13
New oral anticoagulant: dabigatran (Pradaxa) = direct thrombin inhibitor
Just to recap, with coumadin, we can measure PT/INR; for heparin, PTT; and for enoxaparin and its brood, (less rapidly) Factor Xa levels.
"Using the HEMOCLOT direct thrombin inhibitor assay to determine plasma concentrations of dabigatran."