Patient 1, a 140-lb 30-year old female is found to have high blood pressure at 175/105 mm Hg, and has a family history of kidney disease. Her doctor orders a creatinine clearance test as part of a comprehensive physical exam. The results show her to have a creatinine plasma concentration of 0.01 mg/ml and in 1 hour she produces 60 ml of urine with a creatinine concentration of 1.25 mg/ml. 1. Calculate creatinine clearance for this person (show equation). 2. What does the Ccr value tell us about this person's GFR? 3. What does this person's GFR tell us about their kidney function?