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Test #
502
Test CPT Codes
82139, 84510
Phenylketonuria (PKU) Amino Acids (Phenylalanine and Tyrosine only)
Test Type
Biochemical Genetics
Test Disease
Phenylketonuria (PKU)
Test Technology
High Pressure Liquid Chromatography (HPLC)
Clinical Utility
Diagnostic, Follow up
Test Specimen
Plasma
Requirements :
Fasting preferred
3 mL ; Minimum : 0.5 mL
Specimen Collection :
Sodium heparin (preferred)
Lithium heparin (acceptable)
Plasma should be separated within 2 hours of collection
Specimen Shipment and Storage:
Plasma should be shipped frozen (-15 to -25 °C)
Specimen should not be left at room temperature for more than 2 hours
Test Storage
See TRF specimen info/instructions
Turnaround Time (TAT)
48-72 hours, priority given to critically ill patients and infants less than one year of age