Serotonin, Urine (Referred Out) - Saskatoon
Discipline
Biochemistry
Overview
Description
Ordering recommendation
- Patients should not eat avocados, bananas, butternuts, cantaloupe, dates, eggplant, grapefruit, hickory nuts, honeydew melon, kiwifruit, melon, nuts, pecans, pineapple, plantains, plums, tomatoes, or walnuts, which are high in serotonin for 48 hours before and during collection
Alias
-
5-hydroxytryptamine
-
5-HT
Specimen Information
Specimen types accepted
- Urine
Specimen collection container
- Preferred collection container:
- 24 hour urine collection container
- If submitting aliquot: sterile, pink top container
Collection procedure
- Refrigerate during collection until urine can be acidified in laboratory
- See 24 hour collection instructions
- State exact times, dates and volume of collection on requisition
Required volume
- Optimal volume: 5 mL
- Minimum volume: 2.5 mL
Transport and stability
- Refrigerated (preferred) 28 days
- Frozen: 28 days
- Ambient: 48 hours
Rejection criteria
- Specimens received where the proper collection protocols were not followed
- Pathology and Laboratory Medicine Acceptance and Rejection Criteria
Performance
Days/times performed
Availability |
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Testing site |
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Maximum laboratory time
Results reporting
- 6 day turn around time by testing laboratory
Last Updated: October 23, 2024