The amount of leftover (residual) urine can be measured by draining the
bladder with a thin flexible tube (catheter) or by using ultrasound. The
catheter method has a slight risk of causing infection or injury to the tube
leading from the bladder (urethra). But the catheter method is safe when
done carefully. And it may be less expensive than ultrasound.
PeaceHealth endeavors to provide comprehensive health care information, however some topics in this database describe services and procedures not offered by our providers or within our facilities because they do not comply with, nor are they condoned by, the ethics policies of our organization.