03-01-2006, 12:52 AM
A 22-year-old woman is participating in a study that meassure renal function. Evaluation of serum and urine shows the following:
Serum Urine
Na+(mEq/L) 140 100
K+(mEq/L) 4 50
Glucose (mg/dL) 100 0
Creatinine (mg/dL) 1 100
p-Aminohippuric acid(mg/mL) 0.1 50
Assuming a urine flow of 1 mL/min, which of the following best represents her filtration fraction?
A) .10
B) .20
C) .30
D) .40
E) .50
Serum Urine
Na+(mEq/L) 140 100
K+(mEq/L) 4 50
Glucose (mg/dL) 100 0
Creatinine (mg/dL) 1 100
p-Aminohippuric acid(mg/mL) 0.1 50
Assuming a urine flow of 1 mL/min, which of the following best represents her filtration fraction?
A) .10
B) .20
C) .30
D) .40
E) .50