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Labcorp Oklahoma, Inc.
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Peroxisomal (C22-C-26) Fatty Acid Profile, Serum

Order Name Peroxisomal FA
Test Number: 6905961
Revision Date 09/25/2019
Test Name Methodology LOINC Code
Peroxisomal (C22-C-26) Fatty Acid Profile, Serum
Gas Chromatography/Mass Spectrometry (GC/MS)  
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 3 mL (1 mL) Plasma EDTA (Lavender Top) Room Temperature
Instructions Specimen Type: Lavender-top (EDTA) tube, gel-barrier tube or green-top (heparin) tube
Specimen Storage: Maintain specimen at room temperature
Special Instructions: Testing referred to Kennedy Krieger Lab K@#- This test should not be used by New York residents.
 
GENERAL INFORMATION
Clinical Use Peroxisomes play a vital role in several metabolic pathways, including the synthesis of plasmalogens and bile acids. They are also involved in the catabolism of Very Long Chain Fatty Acids (VLCFAs), phytanic acid, and pristanic acid. Defects in these pathways usually result in the accumulation in tissues and body fluids of one or more metabolites derived from the blocked metabolic steps. Specific accumulations are used for the differential biochemical diagnosis of numerous peroxisomal disorders. These disorders include (A) Zellweger spectrum disorders of peroxisomal biogenesis, (B) X-linked adrenoleukodystrophy (X-ALD) and its adult form X-linked adrenomyeloneuropathy (X-AMN), (C) Refsum disease (Phytanoyl-CoA hydroxylase Deficiency), and (D) 2-methylacyl-CoA racemase deficiency 
Performing Labcorp Test Code 831503 
Notes Labcorp Test Code: 831503
CPT Code(s) 82726
Lab Section Reference Lab