<prompt> All are true regarding paroxysmal nocturnal haemoglobinuria, except:HaemosiderinuriaPancytopeniaIncreased alkaline phosphataseCellular marrow  <response>: Answer is C Increased alkaline phosphatase PNH is associated with a decreased leukocyte alkaline phosphate scape. Remember the following fact to answer several questions in our kind of examinations by the principle of exclusion: Conditions with decreased LAP scores P.N.H. C.M.L. Conditions with increased LAP scores Polycythemia - Leukemoid reaction c. Infection 