Use the following clinical laboratory test results for ...
单项选择题Use the following clinical laboratory test results for this questions: Urine flow rate =1 ml/min, Urine inulin concentration = 100 mg/ml, Plasma inulin concentration = 2 mg/ml, Urine urea concentration = 50 mg/ml, Plasma urea concentration = 2.5 mg/ml. The glomerular filtration rate (GFR) is:
A、50ml/min
B、25ml/min
C、100ml/min
D、125ml/min
E、None of the above
A.5