A nurse is reinforcing teaching about valproate with a client who has bipolar disorder. Which of the following information should the nurse include in the teaching?

Choice A reason: Thyroid function monitoring is associated with lithium therapy, not valproate. Choice B reason: EEGs are not required for valproate therapy. They are used in seizure diagnosis, not routine monitoring. Choice C reason: Weekly WBC monitoring is required for clozapine due to risk of agranulocytosis, not valproate. Choice D reason: Valproate carries a risk of hepatotoxicity. Regular liver function monitoring is essential to detect early signs of liver damage.