Oliguria

Last updated: Thursday, 23, December, 2010
CausesAppropriate Tests

Electrolytes, creatinine, urea. Urine - sodium , osmolality.

The urea/creatinine ratio and the fractional excretion of sodium assist to distinguish pre-renal failure from renal and post-renal failure.

Pre-renal failure

Renal failure

Post-renal failure