What is the normal post-void residual volume?

What is the normal post-void residual volume?

• A. 100-150 mL
• B. <50 mL
• C. ">300 mL"
• D. 400-600 mL

Answer: (B)

Post-void residual volume reflects how much urine is left in the bladder after a normal urination. In healthy individuals, the bladder empties nearly completely, leaving only a tiny amount of urine. Normal PVR is generally under 50 mL. Values above this suggest incomplete emptying and may indicate issues such as obstruction, weak detrusor muscle, or nerve problems. The options like 100–150 mL or much higher (300–600 mL) are clearly abnormal and imply retention. Therefore, the most accurate normal value is less than 50 mL.

Post-void residual volume reflects how much urine is left in the bladder after a normal urination. In healthy individuals, the bladder empties nearly completely, leaving only a tiny amount of urine. Normal PVR is generally under 50 mL. Values above this suggest incomplete emptying and may indicate issues such as obstruction, weak detrusor muscle, or nerve problems. The options like 100–150 mL or much higher (300–600 mL) are clearly abnormal and imply retention. Therefore, the most accurate normal value is less than 50 mL.