Children's Mercy Hospitals and Clinics
Name
Phenylalanine (PKU patient) Quant

CMH Lab Section
Biochemical Genetics

Clinical Description
Phenylalanine measurement is used in the diagnosis of hyperphenylalanine and PKU.

Specimen Requirements
Minimum 1 mL in red top with gold ring or light green (lithium heparin)

Availability
Routine

Turn Around Time
Batched testing run on Thursday
Specimens must be received by Wednesday afternoon

Processing Instructions
Spin and refrigerate

Methodology
LC-MS/MS

Ranges
mg/dLµmol/L
Premature infant1.6-3.598-213
0-1 month0.6-2.338-137
1 month- 2 years0.5-1.231-75
2-18 years0.4-1.526-91
> 18 years0.6-1.435-85


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