Normal platelet count
150 - 400 x 10^9/L
Thrombocytopenia
50 - 100 x 10^9/L
Spontaneous hemorrhage
20 x 10^9/L
Life-threatening hemorrhage
< 10 x 10^9/L
Caused by an auto-Ab to the patient’s plts
Idiopathic Thrombocytopenic Purpura (ITP)
Most common disorder causing severe isolated thrombocytopenia
Idiopathic Thrombocytopenic Purpura (ITP)