A blood study that gives the direct measurement of the amount of thyroxine in the blood is a

Question

Quizplus · Accepted Answer

A direct measurement of thyroxine level in the blood gives an accurate indication of the amount of hormone produced by the thyroid gland. Thyroid-stimulating hormone (TSH) level and radioactive iodine uptake tests indirectly measure thyroid function. Fasting blood sugar levels are used to diagnose diabetes and are not related to thyroid function.

A Blood Study That Gives the Direct Measurement of the Amount