Table 5

 Screening tests for renal artery stenosis

TestSensitivity (%)Specificity (%)
Captopril stimulated plasma renin activity73–10072–95
Tests for lateralisation:
Renal vein renin6487
 Captopril renography90–9393–98
 Intravenous urography5989
 Duplex & doppler sonography84–9581–98