A Lasix renal scan measures how well your kidneys filter blood and excrete urine. Doctors use it to diagnose various kidney issues, especially when other tests yield unclear results.
Specifically, this scan shows how much blood each kidney receives and how efficiently they remove waste. It involves two phases: a baseline scan followed by a second scan after you receive Lasix, a diuretic medication that increases urine production. Comparing these scans reveals how well each kidney responds to this medication.
Why is it done? This procedure helps diagnose conditions like kidney blockages, narrowing of the renal arteries (renal artery stenosis), vesicoureteral reflux (urine flowing back up the ureters), and other kidney-related problems impacting blood flow or waste removal.
In short, a Lasix renal scan provides detailed information about your kidney function, helping doctors make accurate diagnoses and develop effective treatment plans.
What to expect: The test involves intravenous injections of a radioactive tracer, followed by image acquisition using a special camera. The procedure is generally painless but requires some preparation and adherence to specific instructions from your doctor or the radiology technician.
