Yale New Haven Hospital

Department of Laboratory Medicine
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5 HIAA, timed urine

Lab Section: 

Sendout Reference


Lab Location: 


Reference Lab: 



Test ID: 




5-HIAA, Quantitative 5-Hydroxyindoleacetic Acid, Quantitative


High Performance Liquid Chromatography




5 days

Specimen Requirements: 

Collection: 10.0 mL Urine in a 24 Hr Urine Container - Acid Washed.
Pediatric volume: 5 mL.
Patient should avoid food high in indoles; Patient should also avoid tobacco, tea, and coffee for 3 days before specimen collection.Please specify on the request
form and on the urine container the total 24-hour urine
volume. Record patient's age on the test request form
and on the urine container.
Handling: Collect 24-hour urine with 25 mL of 6N HCl to maintain a pH below 3. Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen. Keep urine refrigerated during collection if preservative is not used. Shipping refrigerated acceptable, Shipping frozen acceptable..
Stability: Room temperature: 7 days Refrigerated: 30 days Frozen: 30 days




Reference Interval: 

See patient report or consult reference laboratory website.

CPT Code(s): 

83497, 82570

Last Changed: 

9/6/2017 10:18:41 PM

Last Reviewed: 

9/6/2017 10:18:53 PM