A patient needs to undergo initial testing of thyroid function.Which test, in addition to TSH, would be most appropriate for this purpose?
A)Thyroxine, free
B)Triiodothyronine, free
C)Thyroid-stimulating immunoglobulins (TSI)
D)Troponins I and T

Question

Quizplus · Accepted Answer

Thyroxine, free (or FT4) is another test that is commonly used to evaluate thyroid function. It measures the amount of unbound thyroxine in the blood, which can give an indication of how much thyroid hormone the thyroid gland is producing. This test is often used in conjunction with TSH to get a more complete picture of thyroid function. Triiodothyronine, free (FT3) may also be useful, but is not typically ordered as an initial screening test. Thyroid-stimulating immunoglobulins (TSI) are not typically ordered as part of routine thyroid testing, but may be used to help diagnose certain autoimmune thyroid disorders. Troponins I and T are markers of heart muscle damage and would not be relevant to thyroid function testing.

A Patient Needs to Undergo Initial Testing of Thyroid Function