A 28-year-old Japanese woman presents to her doctor complaining of malaise, arthralgias, and double vision. She has no past medical history and is not taking any medications at this time. The patient...

A 28-year-old Japanese woman presents to her doctor complaining of malaise, arthralgias, and double vision. She has no past medical history and is not taking any medications at this time. The patient smokes a pack of cigarettes a day. On physical exam the patient is noted to have mildly elevated BP and her pulses are noted to be asymmetrically decreased. Which of the following is the best test to confirm her diagnosis?

A. ESR

B. P-ANCA

C. EKG

D. Arteriography

E. Renal biopsy