The Significance of Deviation in Time From the 12-hour Standard Serum-clozapine Monitoring.

2015-12-10 02:38:23 | BioPortfolio


The role of Therapeutic Drug Monitoring (TDM) in clozapine dose adjustment have been debated. Blood samples for s-clozapine monitoring should be drawn 12 hours post dose.

The scope of this trial is to describe changes of s-clozapine and s-N-desmethyl-clozapine within the range of 10-14 hours after the last administration of clozapine .


Several factors can influence s-clozapine and thereby the occurence of dose-related adverse reactions and level of treatment response. The role of Therapeutic Drug Monitoring (TDM) in clozapine dose adjustment have been debated. Blood samples for s-clozapine monitoring are recommended to be drawn 12 hours post dose. Uncertainty regarding the timing of blood sampling and the individual pharmakokinetics for clozapine +/- 2 hours from the 12-hour timepoint, leads to uncertainty regarding the comparability of serum concentrations and the information hold within them.

The scope of this trial is to describe changes of s-clozapine and s-N-desmethyl-clozapine within the range of 10-14 hours after the last administration of clozapine .

In addition we want to investigate if any of the following covariates might affect the change of s-clozapine and s-N-desmethyl-clozapine: Sex, age, BMI, co-medications, signs of infection, caffeine intake and smoking.

Study Design

Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Health Services Research




Blood sampling, Clozapine


Psychiatric Centre Rigshospitalet
København Ø




Psychiatric Centre Rigshospitalet

Results (where available)

View Results


Published on BioPortfolio: 2015-12-10T02:38:23-0500

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