Phenylalanine




Test Mnemonic

PHENA2

CPT Codes

  • 84030 - QTY (1)

LOINC ®

14875-9

Performing Laboratory

Cleveland Clinic Laboratories


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mLPlasmaSodium or Lithium heparin (Green) FrozenTransport on ice ASAP. Centrifuge, then remove supernatant and transfer to plastic tube/vial.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mL     

Stability

Environmental Condition Description
AmbientUnacceptable
Refrigerated24 hours
Frozen2 weeks

Days Performed

Varies

Turnaround Time

2 - 10 days

Methodology

Name Description
Ion Exchange Chromatography 

Reference Range

Phenylalanine
Sex Age From Age To Type Range Range Unit
   Days30 DaysNormal38 - 137umol/L
 1 Months23 MonthsNormal31 - 75umol/L
 2 Years18 YearsNormal26 - 91umol/L
 19 Years99 YearsNormal35 - 85umol/L

Special Info

Place specimen on ice after draw

Clinical Info

PKU screen or monitoring of phenylalanine-reduced diet