Metanephrine, 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 Preparation: (1) Patient should abstain from the following at least 2 days prior to and during urine specimen collection: (a) where medically possible, drugs such as alpha-methyldopa (AldometTM), Buspirone, Codeine, Isoproterenol Metabolite, Mandelamine, Metoclopramide and acetaminophen which may potentially interfere with the testing (b) where medically possible, drugs such as tricyclic antidepressants (e.g Amitriptyline), α-blockers (Nonselective) (e.g Phenoxybenzamine), α-blockers (α1 - selective) (e.g Doxazosin), β-blockers (e.g Atenolol), Calcium Channel Antagonists (e.g Nifedipine), Monoamine Oxidase Inhibitor (e.g Phenelzine) and Sympathomimetics (e.g Ephedrine) which may induce increase or decrease in the metanephrine production. (2) If the patient cannot be completely removed from a drug regime, test result should be interpreted with appropriate clinical judgement based on expected physiology response to these drugs.