Urine: fluid excreted by the kidneys
What is urine
Urine is a fluid excreted by the kidneys through the urinary tract, through which unnecessary substances are eliminated from the body.
It plays an important role in regulating liquid balance and balancing acids and bases. In healthy people it has light (yellowish) coloration.
The amount of urine produced daily is 1 to 1.5 liters, however, this reference may increase or decrease depending on the amount of liquid ingested.
Urine is approximately 95% water and 2% urea. In the remaining 3% we can find phosphate, sulfate, ammonia, magnesium, calcium, uric acid, creatine, sodium, potassium and other elements.