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Table 1 UK Clozapine Monitoring and Risk Management Requirements

From: Clozapine rechallenge and initiation despite neutropenia- a practical, step-by-step guide

Standard
Colour alert WBC × 109/L Neutrophils × 109/L
Green >  3.5 >  2.0
Amber 3.0–3.5 1.5–2.0
Red <  3.0 <  1.5
Benign Ethnic Neutropenia
Colour alert WBC × 109/L Neutrophils ×  109/L
Green >  3.0 >  1.5
Amber 2.5–3.0 1.0–1.5
Red <  2.5 <  1.0