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Test ID NBLD0066 5 Hydroxyindoleacetic Acid, Urine



Specimen Type/Requirements

Sterile or non-sterile specimen container - Urine


Patient should avoid food high in indoles: avocado, banana, cantaloupe, dates, eggplant, grapefruit, honeydew melon, kiwi fruit, melons, pineapple, plums, tomato and tomato predicts, any nuts including butternuts, hickory nuts, pecans, and walnuts.


Patient should also avoid alcohol and tobacco products, including nicotine patch and supplemental products.


Patient should also avoid caffeinated food and beverages including chocolate, tea, coffee and soft drinks.


Patient should avoid acetaminophen (Tylenol), aspirin and aspirin containing products, antihistamines, cough syrups containing expectorant, cold and flu medications and L-dopa. Contact your health care provider before discontinuing ANY medications.


Adjust pH after collection to a pH below 3 with Boric Acid.


Urine without preservative is acceptable, if pH is below 6 and shipped frozen.


Serotonin Patient Instructions English

Serotonin Patient Instructions Spanish

Specimen Volume


Preferred Volume   10.0 mL  
Minimum Volume   5.0 mL  




  Unpreserved Urine   Preserved Urine    
Room Temperature   Unacceptable   7 days    
Refrigerated   Unacceptable   30 days   Preferred for transport  
Frozen   Only 30 days   if Unpreserved - preferred for transport 



Performed Test Frequency

Monday through Friday



Performing Lab

Quest Chantilly



Analytic Time

2 days

Interface Build Information

Result Code  Result Code Description  
5616 5-HIAA Urine