PNH is a very rare disease but it is important for all haematologists to know when to test and what to do when a clone is detected. Suzy talks to Dr Morag Griffin about diagnosis and management.

PNH clone: 89.11% in granulocytes 87.40% in monocytes, 19.62% in erythrocytes (0.65% type II cells and 18.97% type III cells)

Normal white cells: no PNH

Abnormal WCC clone: PNH

Normal red cell, cells no PNH

Abnormal red cells: PNH

Courtesy of Dan Payne