What checks renal failure do?

Relevant clinical and biochemical tests hematuria degree of renal function abnormalities can be diagnosed based on a history of chronic kidney can be divided into three phases based on glomerular filtration rate (GFR), blood urea nitrogen (BUN) and serum creatinine (cr) level:
A decompensated renal insufficiency blood BuN between GFR between 50-70ml/min> 7.14> 8.93mmol / L blood Cr> 132 <177umol / L in addition to the clinical manifestations of primary disease have no other symptoms
Two renal decompensation or azotemia GFR <50ml/min blood BuN> 8.93mmol / L serum Cr> 177umol / L with mild fatigue loss of appetite and other symptoms and varying degrees of anemia
Three uremia have GFR <25ml/min blood BuN> 21.42mmol / L serum Cr> 442umol / L has been significant clinical symptoms of uremia as GFR <10ml/min uremia late; GFR <5ml/min compared with uremia end-stage chronic renal failure should be clear once the diagnosis of primary disease and deterioration due to the incentive to adopt effective treatment