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Test ID: ZG003

Vanillylmandelic Acid (VMA), 24 hr Urine

  • CPT Code: 84585
  • LOINC:
  • Specimen Type: 24 hour urine
  • Frequency: Setup: Mon-Sat; analytic time 3 days
  • Instructions: 5mL from 24hr collection. Add 25mL 50% acetic acid as preserv. at start of coll. If collected ref, acid can be added up to 4hrs after coll.
  • Text: Use 15mL 50% acetic acid for children <5. pH should be between 1 and 5. Boric acid may be used, but note on container. Also, verify that pH is in desired range (pH=1-5). If pH is outside of desired range, adjust pH with a stronger acid (acetic acid is preferred). Components: Z0011 VMA, Adult; Z0012 VMA, Child (<15yr); Z0013 Hours, VMA; Z0014 Urine Volume, VMA.
  • Methodology: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

 

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