Vanillylmandelic Acid (VMA), VMA 24-hour urine

BC0163

Synonym(s):
Specimen Container
24 hrs urine container with 15 mL of 50% HCl
(To be obtained from DPLM Client Services)
Specimen Requirement
Urine
24 hrs urine collection

Minimum aliquot volume : 30 mL urine

Total 24 hr urine volume must be clearly indicated
Specimen Storage/Transport

To aliquot urine into sterile container provided by SGH Biochemistry Lab.

Orderable as Urgent? No
Turn Around Time
Average: 7 days (3 - 11 days)
Testing Laboratory Location SGH
Laboratory Biochemistry
Contact Number 6394 1352
Day and Time Performed
Mon – Fri: 0800 hrs– 1700 hrs
Orderable on CPOE? Yes
Downtime Form

Document Title

Additional Information
Patient's diet should be free from chocolate, coffee, tea, citrus fruits and food containing vanilla for 3 days prior to and during specimen collection. Where medically allowable, drugs such as aspirin, drugs containing gentisic and homogentisic acid, antihypertensive drugs, methyldopa, glyceryl trinitrate, chlorpromazine, L-Dopa, epinephrine, norepinephrine, prochlorperazine, reserpine, disulfiram, guanethidine, imipramine, MAO inhibitors, radiographic dyes (for IV pyelography) should be withheld for 3 days prior to and during specimen collection.

Change History Notes

  • 21 Jan 2022 12:00 AM

    Updated Test name, Specimen Requirement and Specimen Storage/ Transport.

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Last Updated - 05 Apr 2025