You Are Concerned That a Person Presenting with Fatigue, Altered

question 5

Multiple Choice

You are concerned that a person presenting with fatigue, altered menses, and weight changes may have a thyroid disorder. To rule in/rule out thyroid dysfunction, the initial diagnostic test(s) that you should order is/are:

• A) Free T₄ and serum antithyroid antibodies
• B) Thyroid ultrasound
• C) Highly sensitive thyroid-stimulating hormone (TSH)
• D) Free T₃ and thyroid scintigraphy

---

Definitions:

Truth Table

A tabular method for representing the logical relationships of statements or propositions by showing every possible combination of truth values.

Atomic Sentences

Fundamental sentences that do not contain any logical connectives and express a basic claim that can be true or false.

Truth Table

A table used in logic to determine the validity of a proposition by listing all possible outcomes.

Modus Tollens (MT)

A logical rule stating that if a conditional statement (“if p then q”) is accepted, and the consequent (q) is denied, then the antecedent (p) must also be denied.