Prior to initiating lithium therapy, which organ tests should be conducted?

The correct choice focuses on the necessity of evaluating kidney and thyroid function before starting lithium therapy. Lithium is primarily excreted through the kidneys, and assessing kidney health is crucial since impaired renal function can lead to lithium accumulation and toxicity. Monitoring thyroid function is also important because lithium can affect the thyroid gland, potentially leading to hypothyroidism in some patients.

Conducting these tests ensures that the patient can safely tolerate lithium treatment and helps in managing any potential side effects related to kidney and thyroid health. This proactive approach in assessing organ function supports patient safety and the effectiveness of the treatment regimen.