Final answer:
The nurse should report the finding of WBC 3,500/mm3 to the healthcare provider as it indicates a low white blood cell count, which can be a serious side effect of carbamazepine therapy and increases the risk of infections.
Step-by-step explanation:
The laboratory finding that the nurse should report to the provider is d. WBC 3,500/mm3. While anti-anxiety agents and neuroleptic drugs like haloperidol can be used to treat agitation and psychotic symptoms, in this case, the concern is with the client taking carbamazepine for a seizure disorder. Carbamazepine is associated with an adverse effect known as agranulocytosis, which is a significant drop in white blood cell (WBC) count, increasing the risk of infection. A WBC count of 3,500/mm3 is considered low (normal range is usually around 4,500-11,000/mm3), and therefore, it should be reported to the healthcare provider promptly.
Other listed values such as potassium levels and carbamazepine levels are within normal limits, and while the 24-hour urine glucose is elevated, it is not necessarily immediately concerning in relation to carbamazepine therapy and may be related to other factors. However, the low WBC warrants immediate attention to assess the patient for potential infections and to adjust medication if necessary.