Uroflowmetry

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Urine sample

Uroflow

Normal values vary depending on age and sex:

• Age: 4 to 7
  • The average flow rate for both males and females is 10 mL/sec.
• Age: 8 to 13
  • The average flow rate for males is 12 mL/sec.
  • The average flow rate for females is 15 mL/sec.
• Age: 14 to 45
  • The average flow rate for males is 21 mL/sec.
  • The average flow rate for females is 18 mL/sec.
• Age: 46 to 65
  • The average flow rate for males is 12 mL/sec.
  • The average flow rate for females is 15 mL/sec.
• Age: 66 to 80
  • The average flow rate for males is 9 mL/sec.
  • The average flow rate for females is 10 mL/sec.

Results must be understood as they relate to the patient’s complaints and physical exam. A result that may need treatment in one patient may require no treatment in another patient.

Several circular muscles normally regulate urine flow, and if any of these muscles becomes weak or stop working, an increase in urine flow or urinary incontinence may result.

If there is a bladder outlet obstruction or if the bladder muscle is weak, a decrease in urine flow may result.

Any abnormal results should be discussed with you and explained by your health care provider.

Review Date: 08/17/2006
Reviewed By: Neil D. Sherman, MD, Urologist, Essex County, NJ. Review provided by VeriMed Healthcare Network.