Coagulation screen

• platelet count
• bleeding time for platelet function
• PR for the tissue factor pathway
• aPTT for the contact activation pathway
• TCT or fibrinogen assay for final common pathway

• blood count, to detect other hematological abnormalities
• liver function tests to exclude liver disease as a cause of coagulation factor deficiency

• specific factor assays, like fibrin degradation products, D-dimer, thrombin time, platelet aggregation, or
• specific factor inhibitor assays, like Protein C, TFPI, Antithrombin etc.