A Physician Ordered T₃ and T₄ Tests for a Young

A physician ordered T₃ and T₄ tests for a young woman complaining of fatigue, weight gain, muscle aches and pains, and constipation.Which laboratory test results will help confirm the diagnosis of hypothyroidism?

A) Both tests show decreases.
B) Both tests show increases.
C) The T₃ test elevates, and the T₄ test decreases.
D) The level of thyroxin rises and then falls back to subnormal levels.