Indicated by a sudden rise in blood urea (uraemia) and creatinine (blood-urea nitrogen). Often accompanied by oliguria (production of <15ml/hr urine) or anuria (lack of urine production), although occasionally high-output renal failure may occur. Acute renal failure is potentially reversible
Acute renal failure may be prerenal (lack of adequate blood supply), intrarenal (lack of functioning kidney tubules) or postrenal (blockage in urinary tract).

Investigation

How to interpret renal function tests.

Types of Acute Renal Failure

Acute renal failure may be Pre-renal (lack of adequate blood supply), Intra-renal (lack of functioning kidney tubules) or Post-renal (blockage in urinary tract).