<prompt> Bleeding disorders with APTT and PT:a Factor 13 deficiencyb Severe liver diseasec Immune thrombocytopenic purpurad Leiden Factor V deficiencycbdabac  <response>: Prothrombin time assesses factor V, VII, X II ; all of which are synthesized in liver.PTT assess measures activity of factor V, VIII, IX, X, XI, XII II some of which II, VIII, VII, X, V are synthesized in liver.So, in liver diseases both aPTT as well as PT are increased. 