RT Journal A1 Michelakis AM, Woods JW, Liddle GW, Klatte EC T1 A predictable error in use of renal vein renin in diagnosing hypertension JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1969 FD April 1 VO 123 IS 4 SP 359 OP 361 DO 10.1001/archinte.1969.00300140005002 UL http://dx.doi.org/10.1001/archinte.1969.00300140005002 AB Although unilateral renal artery stenosis is usually characterized by a diagnostically useful disparity between the renal vein renin values on the two sides, this disparity can be obscured if the renal vein blood samples are drawn too soon after the patient changes from an upright to a recumbent posture.