Vanillylmandelic Acid (VMA), VMA 24-hour urine | KK Women's and Children's Hospital

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.

Last Updated - 05 Apr 2025