Clozapine therapy should be stopped when WBC count falls lower than: (A) 3000 / mm3, (B) 1500 / mm3, (C) 2000 / mm3, (D) 1000 / mm3
Answer is A. Clozapine can lead to agranulocytosis and hence therapy should be stopped if WBC count falls below 3000 / mm3 or neutrophil count falls below 1500 / mm3.