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Test Identifier Information

 
Registration CodeUPTE
Diagnostic Use / Indications

Tetrahydrobiopterin is a cofactor for phenyalanine hydroxylase (and also tryptophan and tyrosine hydroxylases). Raised blood phenyalanine found through newborn screening can be due to either a cofactor or an enzyme deficiency. All new PKU patients need a urine pterin assay to determine which of the above applies as the treatment differs (supplied cofactor if this is deficient; phenyalanine reduced diet if the enzyme is deficient). In this case the test is funded by the Newborn Metabolic Screening Programme.

External Price$63.62(Exclusive of GST)
  

Specimen Collection

 
Specimen Collection Protocols

Collect urine in subdued light. Wrap container immediately in tin foil and freeze (-15 to -20C OK for a few days) within 15 minutes. DO NOT ALLOW TO THAW. STORE FOIL WRAPPED -60 to -80C if possible. Send in DRY ICE.

Patient SpecimenUrine special requirements see collection protocol
Paediatric Specimen5 mL
Sample Delivery to LabFozen
Aliquot Transport to CHLFrozen in DRY ICE.
  

CHLabs Laboratory

 
DepartmentBiochemistry - Specialist
Contact Details Email Email
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Contact Phone Number(03) 364 0118 | x80118
Referred toNSW Biochemical Genetics
Delphic Number Test Number5820

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