Pituitary Disorders: Acromegaly and SIADH/DI · NCLEX Exam

What lab result would most strongly support the diagnosis of acromegaly in a patient cared for by a nurse?

  1. A low serum IGF-1 level
  2. High IGF-1 with no GH suppression on glucose load
  3. Low GH together with a high IGF-1
  4. An elevated serum ADH level
Show answer and explanation

Correct answer: High IGF-1 with no GH suppression on glucose load

Elevated IGF-1 and GH failure to suppress with glucose load are diagnostic of acromegaly because GH normally suppresses with glucose.

Difficulty: Medium Question 13 of 20

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