• Evaluation of patients with hyperphenylalaninemia or monitoring effectiveness of dietary therapy
• Medical monitoring of tyrosinemia

Dk green Sodium heparin (Na hep), no gel

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting

1. Spin
2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as Na hep plasma, within two (2) hours of sample collection
3. Freeze

Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)

Lavender (EDTA), 4mL

Gold serum separator (SST) tube

Red serum vial/tube - 5 mL

Lavender:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting

Gold:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Lavender:

1. Spin
2. Transfer plasma to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as EDTA plasma, within two (2) hours of sample collection
3. Freeze

Gold:

1. Allow sample to clot for a minimum of 30 minutes
2. Spin within two (2) hours of sample collection
3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum
4. Freeze

Red:

1. Allow sample to clot
2. Spin
3. Transfer serum to a Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp), labelled as serum, within two (2) hours of sample collection
4. Freeze

Frozen (strict)

Liquid chromatography/tandem mass spectrometry (LC-MS/MS)

An interpretive report will be provided