WHAT IS INTRAVENOUS PYELOGRAPHY (IVP, EXCRETORY UROGRAPHY) TEST?
An invasive test that uses contrast radiopaque dye to assess the ability of the kidneys to excrete dye in the urine. Radiographs are taken after dye injection to visualize the kidneys, ureters, and bladder to assess for obstruction, hematuria, stones, bladder injury, and renal artery occlusion of the renal pelvis. IVP is the first choice for evaluation for kidney stones if noncontrast computed tomography is not available. IVP is primarily used to examine the upper urinary tract.