<prompt> Increased PT and Normal PTT are found in? -Von Willibrands diseaseFactor 7 deficiencyFactor 8 deficiencyThrombin deficiency  <response>: Answer is option 2, factor seven deficiency The investigations revealed normal platelet counts, deranged prothrombin time PT with International normalised ratio INR of 6.2. Activated paial thromboplastin time aPTT was within normal limits. Ref Robbins 9e pg 449 