Biochemistry Hypothyroidism caused by a viral infection of the thyroid gland is a pathologic condition associated with which of the blood hormone levels. A High prolactin (PRL) B High TSH C High cortisol D Low growth hormone (GH) 💡 Explanation Hypothyroidism caused by a viral infection of the thyroid gland is a pathologic condition associated with which of the blood hormone levels. ✓ Correct Answer: B. High TSH