Initial Testing Indicates That a Patient Has Hypothyroidism, but Additional

Multiple Choice

Initial testing indicates that a patient has hypothyroidism, but additional testing is required to confirm this.Which of the following is a complementary adjunct test that would be appropriate for this purpose?

A) Thyroxine, free
B) Triiodothyronine, free
C) Thyroid-stimulating immunoglobulins (TSI)
D) Troponins I and T