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39625: 5-hydroxyindoleacetic Acid (5-hiaa), 24-hr Urn W/ Creatinine Print View
Total Volume     mL 
5-HIAA, Urine     mg/24 h 
Creatinine, 24-Hour Urine     g/24 hr 

PRIMARY
1 Urine with HCL 24 hour 10 (5) mL   Frozen - 30 Day(s)/Refrigerated - 30 Day(s)/Room Temperature - 7 Day(s)  
ALTERNATE

5-HIAA is the end product of serotonin (5-hydroxytryptophan) and tyrptophan metabolism. Patients with carcinoid tumors of the midgut, e.g., ileum, produce high concentrations of 5-HIAA. Patients with carcinoid tumors of the foregut and hindgut may produce little or no 5-HIAA or do so intermittently.

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. Record 24-hour urine volume on test request
form and urine vial. Record patients age on test request form and
urine vial.

Patient Preparation
Patient should avoid food high in indoles: Avocados, banana, tomato,
plum, walnut, pineapple, and eggplant.
Setup Schedule
Tuesday, Thursday, Friday

Reported (Analytical Time)
3 days

CPT Codes
83497,82570

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Reject Criteria: pH >3.0 and received unfrozen Transport Temperature: Room temperature Methodology: High Performance Liquid Chromatography, Electrochemical Detection






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