Vanillylmandelic Acid & Homovanillic Acid, Urine
VMA - HVA - Homovanillic Acid
Specimen Collection Requirements
Abstain from medications for 72 hours prior to collection.
Urine, random or 24-hour collection container
Refrigeration is the preferred method of preservation. Aliquot 5.0 mL of a well-mixed collection. Record the total volume and collection time interval on the transport tube and test request form.
Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 2 weeks
Age related reference ranges.
Tuesday, September 15, 2020 10:34:43 PM
Client Services: 503-413-1234