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Mayo Clinic Laboratories

Test Code UHVA Homovanillic Acid, Urine

Important Note

Patient Preparation:

Abstain from medications for 72 hours prior to collection.

Specimen Volume

4.0 mL

Preferred Specimen

Urine 24 Hour or Random Specimen.  Refrigerate 24-hour specimens during collection.

Specimen Handling Instructions

Transfer 4.0 mL aliquot from a well mixed 24-hour or random collection to an ARUP Standard Transport Tube (Min. 1 mL).  Record total volume and collection time interval on transport tube and test request form.

Methodology

Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry.

Stat Turn-around Time

N/A

Routine Turn-around Time

1-5 days

Reference Ranges

See report