What is an intravenous pyelogram (IVP)?

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An intravenous pyelogram or urogram creates a picture of your kidneys, ureters and bladder. A dye is injected into your bloodstream through your arm. The dye is excreted through the kidneys and collects in urine, allowing an x-ray to reveal the structure of the kidneys and ureters and any areas where fluid may be escaping or is blocked.
Intravenous urography (IVU) and pyelography (IVP) are different names for x-ray examination of the kidneys, ureters, and bladder. This test yields information about the function of the kidneys, the presence of stones in the urinary tract, and the passage of urine from the kidneys, ureters, and bladder.