Ordering Recommendation

Use for monitoring patients with an established diagnosis of tyrosinemia.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Green (sodium or lithium heparin).

Specimen Preparation

Separate plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL plasma to an ARUP Standard Transport Tube. (Min: 0.25 mL)

Storage/Transport Temperature

Frozen.

Unacceptable Conditions

Hemolyzed specimens.

Remarks
Stability

After separation from cells: Ambient: Unacceptable; Refrigerated: 24 hours; Frozen: 1 month

Methodology

Liquid Chromatography-Tandem Mass Spectrometry

Performed

Sun-Sat

Reported

2-5 days

Reference Interval

Effective November 18, 2019

Age Reference Interval
0-30 days 30-140 µmol/L
1-11 months 30-130 µmol/L
1 year and older 35-110 µmol/L

Interpretive Data

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Laboratory Developed Test (LDT)

Note

Hotline History

N/A

CPT Codes

84510

Components

Component Test Code* Component Chart Name LOINC
0080355 Tyrosine, Plasma 20660-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Plasma tyrosine
Tyrosine, Plasma