What is the normal range for post-void residual in adults?

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Multiple Choice

What is the normal range for post-void residual in adults?

Explanation:
Post-void residual volume shows how much urine remains in the bladder after urination. In adults, the bladder should empty almost completely, so a normal residual is typically less than 50 mL. Residuals higher than about 100 mL suggest incomplete emptying and may indicate issues like detrusor underactivity or obstruction. Therefore, values such as 150–200 mL, 300–400 mL, or more than 500 mL are not normal, while less than 50 mL is.

Post-void residual volume shows how much urine remains in the bladder after urination. In adults, the bladder should empty almost completely, so a normal residual is typically less than 50 mL. Residuals higher than about 100 mL suggest incomplete emptying and may indicate issues like detrusor underactivity or obstruction. Therefore, values such as 150–200 mL, 300–400 mL, or more than 500 mL are not normal, while less than 50 mL is.

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