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HelpTest Code LAB13211 Homovanillic Acid (HVA)
Department
SEND OUTS
Reference Lab Test Number
UHVA
Collection Requirements
Patient Preparation: Abstain from all medication 72 hours prior to collection. Collect 24 hour urine, refrigerate during collection.
Alternate Specimen:
Random urine
Refer To
Primary Collection Container
24 HR Urine container
Alternate Collection Container
Sterile Container
Transport
Urine refrigerated
Preferred Transport Temperature
Refrigerated
Processing
Mix well and send a 5.0 mL aliquot in a screw-capped plastic urine container. Record total volume on requisition and specimen label.
Stability
Ambient: Unacceptable
Refrigerated: 7 days
Frozen: 14 days
Minimum Testing Volume
1.0 mL
Reference Range
By report
Methodology
Quantitative High Performance Liquid Chromotography – Tandem Mass Spectrometry
Performed
Tuesday – Sunday
Reported
4-8 Days
CPT Codes
83150