Test ID: ZG095
CPT code: 82384
LOINC:
Specimen Type: 24hr urine container with 30 mL 6N HCl preservative
Frequency: 4 – 7 days working day.
Instructions: 30mL aliquot Urine from urine container with 30 mL 6N HCl preservative, Refrigerated, adjust pH to <3 with 6N HCl. Min 4mL.
Text: Work up neuroblastoma; diagnose pheochromocytoma. Pheochromocytomas and occasional paragangliomas may cause persistent or paroxysmal hypertension. Work up palpitation, severe headache, diaphoresis. Urine collections are preferred to blood sampling when there is suspicion for tumor when hypertension is not paroxysmal.
Methodology: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)