At a Glance
Why Get Tested?
To help detect and evaluate kidney dysfunction or decreased blood flow to the kidneys
When to Get Tested?
When your doctor thinks that you may have a problem affecting the function of your kidneys, such as an obstruction within the kidney or acute or chronic kidney failure, or dysfunction due to another disease, such as congestive heart failure
Both a urine sample (24-hour collection) and a blood sample drawn from a vein in your arm
Test Preparation Needed?