SIADH has a _______ specific gravity.

Prepare for your Mark Klimek Electrolytes and Endocrine Test. Use flashcards, multiple choice questions with explanations, and expert insights to ace your exam!

Multiple Choice

SIADH has a _______ specific gravity.

Explanation:
Excess ADH in SIADH makes the kidneys reabsorb more water, so the urine becomes concentrated. Specific gravity reflects how concentrated the urine is, and in SIADH it rises because the urine is not diluted. This fits with the pattern of hyponatremia with relatively euvolemic status and concentrated urine. In contrast, conditions that cause dilute urine, like diabetes insipidus or dehydration, would show a low or decreased specific gravity. So the best choice is high.

Excess ADH in SIADH makes the kidneys reabsorb more water, so the urine becomes concentrated. Specific gravity reflects how concentrated the urine is, and in SIADH it rises because the urine is not diluted. This fits with the pattern of hyponatremia with relatively euvolemic status and concentrated urine. In contrast, conditions that cause dilute urine, like diabetes insipidus or dehydration, would show a low or decreased specific gravity. So the best choice is high.

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