Question: Urea
Answer: major nitrogenous waste excreted in urine
==================================================
Question: Creatinine
Answer: nitrogenous waste excreted in urine; product of muscle metabolism
==================================================
Question: Uric Acid
Answer: nitrogenous waste excreted in the urine
==================================================
Question: (Creatinine Clearance)
Answer: measure of the efficiency of the kidneys in removing creatinine from the blood
==================================================