5-hydroxytryptamine; 5-HT
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Serotonin, 24 hr Urine
Test ID: SERO U
Test
Aliases/Synonyms
Method
LC-MS/MS
Report Includes
Creatinine; Serotonin
Specimens
Urine (24 hr)
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
11-Apr-2024
Specimen
Specimens
Urine (24 hr)
Sample Volume
2 mL
Minimum Volume
1 mL
Patient Preparation
For 48 hours prior to blood collection, diet should be free of avocado, banana, coffee, tomato, plum, eggplant, hickory nut, walnut, pineapple, and mollusks. A diet low in tryptophan is required. Patients should also abstain from aspirin, corticotrophins, MAO inhibitors, phenacetin, catecholamines, reserpine, and nicotine.
Collection & Handling
Collection Instructions
Collect urine over a 24-hour period in a sterile bottle containing 20-30 mL of 6 N HCl.
Handling Information
Aliquot sample. Store and send frozen.
Rejection Criteria
| Specimen | Not frozen |
|---|
Test Version
11-Apr-2024
Performance / Interpretation
Method
LC-MS/MS
Turnaround Time
11 days
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
11-Apr-2024
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| SERO U | 20384Serotonin,U24h | nmol/d |
| 20603Creatinine,U | mmol/L | |
| 20604Creatinine,U24h | mmol/d |
Test Version
11-Apr-2024