Which tests are used to assess thyroid function by measuring T4 and TSH?

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Multiple Choice

Which tests are used to assess thyroid function by measuring T4 and TSH?

Explanation:
Testing thyroid function uses two hormones: TSH and T4. TSH comes from the pituitary and tells the thyroid to make T4; measuring both shows how the thyroid and its regulatory system are performing. If TSH is high and T4 is low, the thyroid isn’t making enough hormone (hypothyroidism). If TSH is low and T4 is high, the thyroid is overactive (hyperthyroidism). A panel that measures TSH together with T4 (often free T4) is the standard way to assess thyroid function. The other tests don’t probe the thyroid: troponin checks heart muscle injury, urinalysis screens urine, and Mono Spot looks for infectious mononucleosis.

Testing thyroid function uses two hormones: TSH and T4. TSH comes from the pituitary and tells the thyroid to make T4; measuring both shows how the thyroid and its regulatory system are performing. If TSH is high and T4 is low, the thyroid isn’t making enough hormone (hypothyroidism). If TSH is low and T4 is high, the thyroid is overactive (hyperthyroidism). A panel that measures TSH together with T4 (often free T4) is the standard way to assess thyroid function. The other tests don’t probe the thyroid: troponin checks heart muscle injury, urinalysis screens urine, and Mono Spot looks for infectious mononucleosis.

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