UREA AR FOR BIOCHEMICAL PURPOSE
The cycling of and excretion of urea by the kidneys is a vital part of mammalian metabolism. Besides its role as carrier of waste nitrogen, urea also plays a role in the countercurrent exchange system of the nephrons, that allows for re-absorption of water and critical ions from the excreted urine.
Urea is the most important nitrogenous fertiliser in the country because of its high N content (46%N). Besides its use in the crops, it is used as a cattle feed supplement to replace a part of protein requirements. It has also numerous industrial uses notably for production of plastics.
Dosage
There are two physiological causes of reduced concentration: low-protein diet, and pregnancy. Low-protein diet is associated with reduced urea production and consequent tendency to reduced plasma/serum urea concentration.