A nurse in an acute care mental health facility is preparing to administer morning medication for a client who has been taking lithium for 2 weeks and has a current lithium level of 1.0 mEq/L. Which of the following actions should the nurse take?

A. A lithium level of 1.0 mEq/L is within the therapeutic range (0.6 to 1.2 mEq/L). The nurse should administer the morning dose of lithium as prescribed. B. While it is important to monitor for medication adherence, there is no indication from the current lithium level that this client is refusing the medication. C. Gastric lavage is unnecessary, as the lithium level is not elevated enough to warrant this extreme intervention. D. Early signs of lithium toxicity typically occur with levels above 1.5 mEq/L. Since the level is 1.0 mEq/L, the nurse should proceed with administering the medication.