A nurse is in a provider's office is reviewing the health record of a client who is being evaluated for Grave's disease. Which of the following is an expected laboratory finding for this client?

A. Decreased free thyroxine index: In Graves' disease, there is an overproduction of thyroid hormones, including thyroxine (T4), leading to an increase in the free thyroxine index, not a decrease. Elevated T4 levels are typical in hyperthyroidism associated with Graves' disease. B. Decreased thyroid stimulating hormone (TSH): In Graves' disease, the body produces excess thyroid hormones, which suppresses the pituitary gland’s production of TSH. As a result, TSH levels are typically low in Graves' disease. C. Decreased triiodothyronine (T3): Graves' disease usually results in increased levels of T3 and T4 due to the overactive thyroid. A decrease in T3 would be inconsistent with the hyperthyroid state seen in this disorder. D. Decreased thyrotropin receptor antibodies: In Graves' disease, there is an increase in thyrotropin receptor antibodies, which stimulate the thyroid to produce excess thyroid hormones. These antibodies are often elevated, not decreased.