Hydroxyindoleacetic Acid

Overview

  • EPIC Code:
  • LAB352
  • Soft Test Code:
  • 5HIA1
  • Send Out Test Code:
  • 2636 / 523X
Alternate Names
  • 5HIAA, 24-hour Urine
  • Serotonin, 24-hour Urine

Specimen Collection & Preparation

Patient Preparation

Patient should avoid food high in indoles: avocado, banana, tomato, plum, walnut, pineapple, and eggplant. Patient should also avoid tobacco, tea, and coffee for 3 days before specimen collection.


Specimen Requirements

10.0 mL aliquot from a well mixed 24 hour Urine Collection in a Plastic Container


Transport And Storage

7 days Ambient (preserved)
30 days Refrigerated
30 days Frozen (Unpreserved)


Collection Instructions

1. When starting the 24-hour period, urinate and discard (throw-away) this specimen. NOTE THE TIME
2. From that time on, collect all urine by urinating into a clean container and transfer into the provided container. 
DO NOT URINATE DIRECTLY INTO CONTAINER.
3. Try to pass the last urine just prior to the end of the 24 hour period. Add this urine into the container. 
4. Urine Specimen should be kept refrigerated during and after collection. 

Printable Patient Collection Instructions

English 24 Hour Urine Collection

Spanish 24 Hour Urine Collection 

Burmese 24 Hour Urine Collection

Arabic 24 Hour Urine Collection 


Minimum Volume

5.0 mL


Neonatal Volume

Clinical Interpretation

Reference Range:

Please refer to interpretive results


Methodology:
  • High Performance Liquid Chromatography (HPLC)

Production Schedule

Sites Performed
  • Quest - Chantilly
Days Performed
Monday
Tuesday
Wednesday
Thursday
Friday
Departments
  • Sendouts - Clinical
Turn Around Time

3 to 5 days


Coding & Compliance

CDM

00910440


CPT Coding

83497