What is DTPA Renogram test?
DTPA Renogram, also known as
- Renal scan,
- Captopril Challenge,
- DTPA with Ace Inhibitor,
- DTPA with GFR.
A renogram can be performed to assess relative renal function, evaluate possible urinary obstruction, or assess narrowing of the renal artery in patients with high blood pressure.
Is DTPA scan safe?
There are no known associated risks involved in the DTPA or MAG3 scan itself. The test involves ionising radiation, which is relatively small and similar to many other routine medical imaging tests.
How does DTPA work?
DTPA is a kind of medicine called a chelating agent. Chelating agents work by binding and holding on to radioactive materials or poisons that get into the body. Once bound to a radioactive material or poison, the chelating agent is then passed from the body in the urine.
Why would my doctor refer me to have this procedure?
Your doctor will refer you for a nuclear medicine renal scan to look at the blood supply, function and flow of urine from the kidneys if it is suspected that there are problems with how your kidneys are working. Reduced kidney function may be shown in abnormal blood tests, high blood pressure or abnormal results obtained from the urine itself.
Are there any after effects of a renal scan?
If a dose of a frusemide or captopril is given, you may need to empty your bladder more often than usual for that day. It is important you drink plenty of fluids after having the scan to avoid dehydration. Some people have profound low blood pressure after captopril. Please let the staff of the facility where you are having the scan know if you feel dizzy, light headed or unwell.
How long does a renal scan take?
The test itself will take approximately 30–60 minutes. The time varies because the rate at which the kidneys function will differ for each individual.