Thyroid Function Tests and Related Topics MCQs

Thyroid Function Tests and Related Topics MCQs

  1. One of the following is a cause of elevated total and free T4:
    • A. Pregnancy
    • B. Viral hepatitis
    • C. Grave’s diseases ✅
    • D. Heroin addiction
    • E. Oestrogen therapy

  2. One of the following is a cause of elevated total and free T3:
    • A. Pregnancy
    • B. Viral hepatitis
    • C. Pituitary adenoma ✅
    • D. Heroin addiction
    • E. Oestrogen therapy

  3. One of the following is a cause of low free T4:
    • A. Androgen therapy
    • B. Liver cirrhosis
    • C. Mal-nutrition
    • D. Nephrotic syndrome
    • E. Hashimoto thyroiditis ✅

  4. In primary hyperthyroidism, which of the following statements is true:
    • A. All patients have decreased total and free T4 and T3 level
    • B. T3 uptake is decreased
    • C. FTI is decreased
    • D. All patients have increased TRH✅
    • E. There is a blunted response to TRH stimulation

  5. The first trimester of pregnancy is accompanied by which changes in thyroid function tests:
    • A. Decreased TBG
    • B. Decreased total T4 and T3
    • C. Decreased or undetectable TSH
    • D. Increased TSH✅
    • E. Positive antimicrosomal antibodies

  6. Which is a cause of depressed TSH in an euthyroid patient:
    • A. Subclinical hyperthyroidism ✅
    • B. Subclinical hypothyroidism
    • C. Secondary hypothyrodism
    • D. Grave’s disease
    • E. Hashimoto’s thyroiditis

  7. Which of the following statements is true concerning TSH:
    • A. It is increased in primary hyperthyroidism
    • B. It is increased in secondary hyperthyroidism
    • C. It is decreased in primary hypothyroidism
    • D. It is increased in secondary hypothyroidism
    • E. It is decreased in severe cases of non thyroid illness ✅

  8. Which of the following is true in primary hypothyroidism:
    • A. FT3 is the most sensitive indicator of thyroid function
    • B. TSH increase may precede the decrease in the thyroid hormone ✅
    • C. Reverse T3 is increased
    • D. Positive thyroid stimulating immunoglobulins are diagnostic of the causative disease
    • E. With treatment, TSH returns to normal prior to T4

  9. TSH is NOT a reliable indicator of thyroid function in case of:
    • A. Primary hypothyroidism
    • B. Primary hyperthyroidism
    • C. First 6 months of treatment of primary hyperthyroidism ✅
    • D. Third trimester of pregnancy
    • E. TBG excess

  10. In the acute phase of non-thyroid illness, which statement is true:
    • A. Total T3 is increased
    • B. Free T3 is increased
    • C. Reverse T3 is increased ✅
    • D. TSH is increased
    • E. Thyroid replacement therapy is indicated

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