What's wrong with decreased urine output?

Urine volume reduction, first of all, we must assess the 24 hours of drinking water, urine volume. Usually eat food is relatively light, it is recommended to test kidney function, observe kidney function is normal. If you drink less water, urine volume is reduced, generally no problem. Increase the amount of water, urine volume will increase significantly. It is recommended to control light diet, reduce too greasy food. If kidney function is normal, this situation does not need to worry. If the urine volume is less than 400 ml, this is oliguria, urine volume is less than 100 ml, this is anuria. This situation should cause enough attention, to suspect renal failure.