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In their recent article, Huot et al1 conclude that captopril renography has low sensitivity and specificity and should not be used to screen for renovascular hypertension. Captopril renography clearly has limitations, as previously described.2,3 However, I believe it would be a grave mistake to discard the test as the authors suggest.
Mann SJ. Captopril Renal Scans for Detecting Renal Artery Stenosis. Arch Intern Med. 2003;163(5):630. doi:10.1001/archinte.163.5.630-a