A man's leg was crushed between a car bumper and a wall. His physicians believe their patient has suffered kidney damage from myoglobin blocking glomerular pores. Tests showed the following results:
plasma creatinine: 30 mg/100 mL plasma
24 hour urine specimen: volume = 1 liter
urine creatinine: 30 mg/mL urine
A. How many mg of creatinine are in the urine specimen? How much creatinine appears in the urine per hour?
B. What is the patient's creatinine clearance in mL/min?
C. What is the patient's GFR?
D. Is this a normal GFR? Did the patient sustain kidney damage?