Also known as:
Sample Type: 24HRS URINE
This test is used to help diagnose and monitor carcinoid tumors. These tumors can be found in lungs, stomach, and GI tract. They secrete a substance called serotonin which gets converted to 5-HIAA and is excreted through urine.
The test is performed on a 24 hr urine collection. Empty your bladder in the morning and collect the urine for the next 24 hrs, everytime you go to the toilet including the next morning.