Thyroid Function Quiz

Which hormone is primarily measured to assess thyroid function?

• Triiodothyronine (T3)

• Thyroxine (T4)

• Thyroid-Stimulating Hormone (TSH)

• Calcitonin

Which test result pattern is most indicative of primary hypothyroidism?

• Low TSH and high T4

• High TSH and low T4

• Low TSH and low T4

• High TSH and high T4

Which thyroid hormone is biologically active?

• Free T4

• Free T3

• Total T4

• Total T3

Which test is used to differentiate between Graves’ disease and thyroiditis?

• Thyroid-stimulating immunoglobulins (TSI)

• TSH receptor antibodies (TRAb)

• Thyroglobulin levels

• Radioactive iodine uptake (RAIU)

Which thyroid function test is most useful during pregnancy?

• Total T4

• Free T3

• TSH

• Free T4

What is the clinical significance of thyroid peroxidase antibodies (TPO-Ab)?

• They indicate iodine deficiency.

• They confirm hypothyroidism.

• They suggest an autoimmune thyroid disease.

• They predict thyroid cancer.