Quick Review Cards for Medical Laboratory Science

Urine Volume

Urinalysis and Body

Fluids Review 487

Normal daily volume 600–2,000 mL (average 1,200–1,500mL)

Normal day-to-night ratio 2:1–3:1

Diuresis ↑urine production

Polyuria Marked ↑in urine flow

Adult: >2,500 mL/day

Children: 2.5–3 mL/kg/day

Oliguria Marked ↓in urine flow

Adult: <400 mL/day

Children: <0.5 mL/kg/hr

Infants: <1 mL/kg/hr

Anuria No urine production

Note: Urine volume ↑with diabetes mellitus (solute diuresis) & diabetes insipidus (lack of ADH).