Which of the following is a goal of therapeutic drug monitoring?

Which of the following is a goal of therapeutic drug monitoring?

• A. To determine the time to peak concentration
• B. To optimize dosing by maintaining drug exposure within a target range
• C. To measure liver enzyme levels
• D. To predict pharmacogenetic genotype

Answer: (C)

Therapeutic drug monitoring is all about keeping a drug’s exposure in the patient within a defined therapeutic window. By measuring drug concentrations in the blood and adjusting dose or dosing interval accordingly, clinicians aim to maximize efficacy while minimizing toxicity. This often centers on achieving a stable trough level or an estimated exposure (like AUC) that matches evidence-based targets. Time to peak concentration isn’t the primary focus of TDM because the goal is not just when the drug peaks, but that overall exposure stays within the target range over time. Measuring liver enzyme levels is a liver-function assessment, not a method for guiding dosing to achieve a therapeutic exposure. Predicting pharmacogenetic genotype relates to how a patient’s genetics may influence drug metabolism, which can inform dosing decisions, but it’s not the monitoring process itself.

Therapeutic drug monitoring is all about keeping a drug’s exposure in the patient within a defined therapeutic window. By measuring drug concentrations in the blood and adjusting dose or dosing interval accordingly, clinicians aim to maximize efficacy while minimizing toxicity. This often centers on achieving a stable trough level or an estimated exposure (like AUC) that matches evidence-based targets.

Time to peak concentration isn’t the primary focus of TDM because the goal is not just when the drug peaks, but that overall exposure stays within the target range over time. Measuring liver enzyme levels is a liver-function assessment, not a method for guiding dosing to achieve a therapeutic exposure. Predicting pharmacogenetic genotype relates to how a patient’s genetics may influence drug metabolism, which can inform dosing decisions, but it’s not the monitoring process itself.