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Labcorp Oklahoma, Inc.
Test Directory


Index:

Tyrosine

Order Name TYROSINE
Test Number: 3609450
Revision Date 08/28/2017
Test Name Methodology LOINC Code
Tyrosine
Quantitative Liquid Chromatography/Tandem Mass Spectrometry 20660-7 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 0.5mL (0.25) Plasma Sodium Heparin (Green Top / No-Gel) Frozen
Alternate 1 0.5mL (0.25) Plasma Lithium Heparin PST (Light Green Top) Frozen
Instructions Specimen Type: PREFERRED: Frozen plasma from green-top (sodium heparin) tube. frozen plasma from lavender-top (EDTA) tube OR frozen ACCEPTABLE: Frozen plasma from lavender-top (EDTA) tube or frozen plasma from PPT(TM). Frozen serum from serum separator tube (SST) or frozen serum from red-top tube will not be rejected. NOTE: Plasma reference ranges will be applied to all specimen types.
Specimen Storage: Centrifuge, remove plasma from cells, and FREEZE immediately.
Specimen Collection: Separate plasma from cells. Transfer specimen to plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, PLEASE SUBMIT SEPARATE FROZEN SPECIMENS FOR EACH TEST REQUESTED.
Special Instructions: Blood spots on filter paper are not an acceptable specimen type. This test is NOT to be used for newborn screening.
Specimen Stability: Ambient: Unstable, Refrigerated : Unstable, Frozen: 14 days
GENERAL INFORMATION
Notes Reference Lab: ARUP
Test Code: 80355
Click Here to view information on the ARUP website.
CPT Code(s) 82131
Lab Section Reference Lab