Phenylalanine + Tyrosine




Test Mnemonic

PHETYR

CPT Codes

  • 84510 - QTY (1)
  • 84030 - QTY (1)

Performing Laboratory

Cleveland Clinic Laboratories


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.5 mLPlasmaSodium or Lithium heparin (Green) FrozenSeparate plasma from cells ASAP.

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 - 137um/L
 1 Months23 MonthsNormal31 - 75um/L
 2 Years18 YearsNormal26 - 91um/L
 19 Years99 YearsNormal35 - 85um/L
Tyrosine
Sex Age From Age To Type Range Range Unit
   Months1 MonthsNormal55 - 147um/L
 1 Months24 MonthsNormal22 - 108um/L
 2 Years18 YearsNormal24 - 115um/L
 18 Years99 YearsNormal34 - 112um/L

Special Info

Place specimen on ice after draw