DMSA scan Home A-Z Health Information Health Library A-Z DMSA Scan Overview A DMSA (Dimercaptosuccinic Acid) scan is a specialised imaging test that provides detailed imaging of the structure and function of your kidneys. It is commonly used to evaluate kidney health, check for scars or abnormalities, and assess how well the kidneys are working.Your doctor may recommend a DMSA scan to:Detect kidney scars from a urinary tract infection (UTI)Identify congenital abnormalities in the kidneys (present from birth)Assess individual kidney functionMonitor kidney damage due to certain conditions, such as reflux nephropathyEvaluate your kidneys following trauma or surgery How Does a DMSA Scan Work? During the test:Injection of Radioactive Tracer: A small amount of a radioactive substance (DMSA) is injected into your bloodstream, usually through a vein in your arm. The tracer is absorbed by the kidneys, allowing them to be seen clearly on the scan.Imaging is performed after 2-4 hours while allowing the tracer to concentrate in your kidneys. You will be asked to lie down, and a gamma camera will capture detailed images of your kidneys.No fasting is required during the waiting period, and hydration is encouraged.Duration: The actual imaging process typically takes 20-30 minutes. However, the total appointment may take longer due to the waiting period after the injection. Preparing for Your DMSA Scan Fasting: not required.Hydration: Drink plenty of water before and after the scan to help flush out the tracer from your body. After the DMSA Scan You can resume normal activities immediately after the scan.Drink extra fluids after the test to help your body eliminate the tracer more quickly.Your doctor will discuss the results with you at a follow-up appointment and explain what the images reveal about your kidney function.