Test directory: 5-HIAA, 24Hr Urine w/Creatinine

Ordering Code279
Test Name5-HIAA, 24Hr Urine w/Creatinine
Alias5-Hydroxyindoleacetic Acid (5-HIAA), 24Hr Urine w/Creat
Serotonin Metabolite
Preferred SpecimenUrine, 24 Hour 10 mL (5 mL minimum) aliquot from a 24-hour urine that has been preserved with 25 mL 6N HCl, collected in a plastic, 24-hour urine container
Preferred Container24 Hour Urine Container
Other Specimen/ContainerUrine without preservative is acceptable if pH is below 6 and the sample is shipped frozen
Aliquot from a 24-hour urine, unpreserved, with a pH < or = 6, collected in a plastic, 24-hour urine container
Optimum Volume10 mL
Collection InstructionsCollect 24-hour urine with 25 mL 6N HCl to maintain a pH < or = 3. If no preservative is used, specimen must be stored refrigerated during collection but shipped frozen and pH must be < or = 6. Record 24-hour urine volume and patient's age on test request form and on urine container.
Handling InstructionsAdjust to pH<3 with 6N HCl.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Preserved Urine: Room temperature
Unpreserved Urine: Frozen
Specimen StabilityUnpreserved Urine:
Room temperature and Refrigerated: Unacceptable
Frozen: 30 Days
Preserved Urine:
Ambient: 1 Week
Refrigerated: 1 Month
Frozen: 1 Month
Rejection CriteriaPreserved urine received refrigerated with pH >3,
Unpreserved urine received frozen with pH >6
Avail. StatNO
Analytic Time3-7 Days
MethodologyHigh Performance Liquid Chromatography, Electrochemical
Detection
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 20, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Total VolumeALLSee report.
Creatinine, 24 Hr UrineALLSee report.
5-Hydroxyindoleacetic AcidALLSee report.