Best practices for assessing diseases of the thyroid gland include a thorough

but targeted history, systematic physical examination, and selective use of appropriate diagnostic evaluation. The AGACNP knows that although serum T3 and T4 are not indicated routinely, a free T4 test is most useful in evaluating patients:

A.With profound symptoms of hypothyroidism      B. Following treatment for Graves’ disease            C. To rule out autonomous toxic nodule      D. At risk for thyroid cancer