Test ID: ZG813
CPT code: 84120
LOINC:
Specimen Type: Random Urine (without preservative)
Frequency: 3 – 5 days week days.
Instructions: 2 mL Urine f(without preservative), Refrigerated Light Protected. Min 1.5 mL.
Text: Urine porphyrins are useful for the evaluation of cutaneous photosensitivity to exclude porphyria cutanea tarda (PCT). Evaluation of neurologic and/or psychiatric symptoms associated with acute porphyrias, such as acute intermittent porphyria (AIP), requires urine porphobilinogen (PBG) testing.
Methodology: High-pressure liquid chromatography (HPLC) with fluorometric detection