Select the cоrrect аnswer: The fоllоwing thyroid function lаbs аre obtained on a middle-aged adult during a routine annual physical: TSH 7.2 uIU/L Free T4 1.6 ng/dL Anti-TPO antibodies are positive. Other than complaints of periodic arthritic discomfort, the patient reports no physical complaints. The physical exam is unremarkable. The primary care nurse practitioner should incorporate which of the following recommendations into the patient's plan of care?