Laboratory Test DirectoryShare
Homovanillic Acid (HVA), Urine
|Methodology:||Quantitative High Performance Liquid Chromatography|
Patient Preparation: Abstain from medications for 72 hours prior to collection.
Collect: 24-hour OR Random urine - 4 ml. Refrigerate 24-hour specimens during collection.
Specimen Preparation: Transfer 4 mL aliquot from a well-mixed 24-hour or random collection to a Standard Transport Tube.
Record total volume and collection time interval on transport tube and test request form.
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions:Specimen types other than urine.
Stability: Ambient: Unacceptable; Refrigerated: 1 week