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HOMOVANILLIC ACID (HVA), URINE

Synonym(s):

Lab Section Category

Description

Indications

Specimen Required

​24 hr urine specimen in 15 mL 50% HCl or random urine.

Minimum aliquot volume : 30 mL urine

Storage and Transport

Method

​High Performance Liquid Chromatography

Test Results

Reference Interval / Value

​0 – 1 yr : < 20.2 µmol/mmol creatinine
 
2 – 4 yrs : < 13.6 µmol/mmol creatinine
 
5 – 9 yrs : < 9.4 µmol/mmol creatinine
 
10 – 19 yrs : < 7.9 µmol/mmol creatinine

≥ 20 yrs : 0 - 34.1 µmol/day

Turnaround Time

​Mean = 7 days, Range: 3 - 11 days

Day(s) Test Set up

​Monday – Friday

Remarks

​Instructions before sampling:


Where medically allowable, patient should avoid taking moclobemide, aspirin, disulfiram, levodopa, pyridoxine and reserpine 3 days prior to and during specimen collection.

Total 24-hour urine volume must be clearly indicated.

Change History Notes

Others

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