A Renal Scan is used to help diagnosis kidney disease and certain problems with the rest of the urinary tract. It is primarily used to evaluate the function and size of the kidneys.
Is There Any Special Preparation Needed Before the Test?
There are certain medications that must not be taken prior to having this test performed. This is to assure the most accurate results. Please remind your doctor of what medication you are taking to make sure they do not interfere with the exam. Drinking fluids before the exam is encouraged.
How is the Test Performed?
You will receive an injection into a vein in your arm containing a very small amount of radioactive material tracer. Adverse reaction to this injection is very rare. This tracer is carried in the blood to the kidneys. Images are taken during the injection see the blood flow in the kidneys.
Images of the kidneys will then be taken for 60 – 90 minutes. This will enable us to see how well the kidneys are working over a period of time. During this time it may be necessary to administer a pharmaceutical in order for us to better determine if there is any obstruction in the urinary tract or a problem with the blood vessel which supplies the kidneys.
What Happens After the Test?
When the exam is completed, the nuclear medicine physician will review your images, prepare a written report and discuss the results with your doctor. Your doctor will then explain the test results to you and discuss what further procedures, if any, are needed.
What Other Information Should I Know?
- The amount of radiation you will receive during the test is no more than what you would receive from similar x-ray procedures.
- Be sure to tell your doctor if you are pregnant, think that you are pregnant or are a nursing mother.
- The tracer you are given remains in your body for a short time and is cleared from the body through natural bodily functions. Drinking plenty of fluids will help eliminate the material more quickly.
- You should be able to resume your daily activities after the test.