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Homovanillic and Vanillylmandelic Acids - Random Urine

Referred out for testing

Source Random Urine
Mnemonic

MSCREFNON

Misc Ref Test Name field: HVA VMA

For HVA and VMA requests for adult patients, refer to HVA - 24 Hour Urine and VMA - 24 Hour Urine.

Specimen Requirements

Prefer 5-10 mL random urine.

Minimum: 1.0 mL urine

Specimen Handling

No preservative required.  Send a copy of the requisition with the specimen.

RRL & PSC:
Freeze immediately. Transport on ice to the DSC in a separate bag with a copy of the requisition.

Extra-regional:
Freeze immediately. Transport on dry ice to the DSC in a separate bag with a copy of the requisition.

DSC:
Place specimens in freezer upon receipt in lab; ensure frozen specimens do not thaw.

Additional Information

Certain foods and medications may interfere. Patient instruction sheet is available with collection instructions. Refer to Patient Instructions - Collecting Urine for Homovanillic and Vanillylmandelic Acid HVA and VMA PX4244.

This test is only recommended for the investigation of neuroblastoma in pediatric patients.  For investigation of pheochromocytoma in adults, "Metanephrines - Urine" should be ordered.

Testing Location University of Alberta
Testing Frequency

Alternate Name(s) HVA - Random Urine; Vanillylmandelic Acid - Random Urine; VMA - Random Urine
Reference Interval