<unk>  or urinary<unk> <unk>  is the volumetric<unk> <unk>  of urine during urination. It is a measure of the quantity of urine excreted in a specified period of time (per second or per minute). It is measured with uroflowmetry, a type of<unk>  measurement. The letters "V" (for volume) and "Q" (a conventional symbol for<unk> <unk>  are both used as a symbol for<unk> . The V often has a dot (overdot), that is, V̇ ("V-dot"). Qmax indicates the maximum<unk> <unk> . Qmax is used as an indicator for the diagnosis of enlarged prostate. A lower Qmax may indicate that the enlarged prostate puts pressure on the urethra, partially occluding it. Uroflowmetry is performed by urinating into a special urinal, toilet, or disposable device that has a measuring device built in. The average<unk>  changes with age.
Urine flow rate
Urine osmolality
Free water clearance
Glomerular filtration rate
Segmental blood pressure
Mean arterial pressure
Renal threshold
Urine sodium