Test ID: ZG823
CPT code: 82139
LOINC:
Specimen Type: Plastic Random urine container without preservative
Frequency: 3 – 7 days five days.
Instructions: 5 mL Urine without preservative, Frozen. Min 0.2 mL.
Text: Diagnosis & monitoring of inherited aminoacidurias, organic acidurias, & urea cycle defects. May be used as a confirmatory test to abnormal newborn screen results. Some disorders will only manifest elevated amino acids in urine. Screening for aminoacidopathies in urine alone is discouraged unless a disorder is suspected that manifests abnormalities in urine
Methodology: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)