Test Details
Mnemonic
U5HIR
Ordering Code
1013150
CPT-4 Code(s)
83497
Specimen Information
Patient Preparation
Patients should not eat avocado, banana, butternut, cantaloupe, dates, eggplant, grapefruit, hickory nuts, honeydew, kiwi fruit, melons, nuts, pecans, pineapple, plums, tomatoes, or walnuts for a 48 hour period prior to start and duration of collection. Could result in falsely elevated 5-HIAA excretion. Medications affecting metabolism of serotonin must be avoided at least 72 hours before and during collection. Patients should also avoid coffee, tea and tobacco. Patient should consult their physician before discontinuing any medication.
Collect
Random urine
Specimen Preparation
Add 1-2 drops 6N HCl to a 10.0 mL urine to ensure pH 1-3. Mix well and send in a screw capped plastic urine cup.
Alternate Specimen
Alternate method of collection for random urine specimen without preservative: Send 15.0 mL urine refrigerated in a screw capped plastic urine container.
Minimum Volume
5.0 mL
Transport Temperature
Refrigerated
Stability
With preservative:
Room temperature: 10 days
Refrigerated: 14 days
Frozen: 1 year
Without preservative:
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 14 days
Room temperature: 10 days
Refrigerated: 14 days
Frozen: 1 year
Without preservative:
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 14 days
Methodology
High Performance Liquid Chromatography
Reference Range
<10 mg/G creatinine
Performing Laboratory
Warde Medical Laboratory
New York DOH Approval Status
Yes