 A DMSA renal scan is a nuclear medicine test that gives doctors detailed pictures of the kidneys. DMSA is combined with technetium, which is short-lived radioisotope that goes directly to the kidneys once inside the body and only stays radioactive for a few hours. It's a non-invasive test that's used to estimate the function of the kidneys. On the day of the test, please inform the attending staff in case you are pregnant. No fasting is required before the test. In case of pediatric patients, they are accompanied to the Pediatric Emergency Department to insert the intravenous scannula. A small dose of radioactive injection is given via intravenous scannula and the scan is done 2-3 hours later. The duration of the scan is about 20 minutes. Your reports will be issued on the same day.