Which option describes the monitoring protocol specifically used for clozapine?

• A. FGAs dosing
• B. Half of those in schizophrenia
• C. Efficacy correlation
• D. Clozapine monitoring

Answer: (D)

Clozapine requires a unique safety monitoring plan because of the risk of agranulocytosis. The protocol focuses on regular blood testing to track white blood cell counts and absolute neutrophil counts, starting with a baseline before treatment and continuing at a high frequency after initiation. In practice, this means CBC with differential is obtained before starting, then tested weekly for the first six months, biweekly for the next six months, and monthly thereafter. Programs like Clozapine REMS coordinate these checks and set thresholds; if counts drop below defined levels, clozapine is paused and counts are rechecked until they recover. This emphasis on a structured hematologic safety protocol is specific to clozapine and distinguishes it from other options.