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Fatty Acid Panel, Comprehensive (C8-C26), Serum
Test Code17568
CPT Codes
82542, 82725, 82726
Includes
Octanoic, C8:0
Decenoic, C10:1
Decanoic, C10:0
Lauroleic, C12:1
Lauric, C12:0
Tetradecadienoic, C14:2
Myristoleic, C14:1
Myristic, C14:0
Hexadecadienoic, C16:2
Hexadecenoic, C16:1w9
Palmitoleic, C16:1w7
Palmitic, C16:0
g Linolenic, C18:3w6
a Linolenic, C18:3w3
Linoleic, C18:2w6
Oleic, C18:1w9
Vaccenic, C18:1w7
Stearic, C18:0
EPA, C20:5w3
Arachidonic, C20:4w6
Mead, C20:3w9
h g Linolenic, C20:3w6
Arachidic, C20:0
DHA, C22:6w3
DPA, C22:5w6
DPA, C22:5w3
DTA, C22:4w6
Docosenoic, C22:1
Docosanoic Acid, C22:0
Nervonic, C24:1w9
Tetracosanoic, C24:0
Hexacosenoic, C26:1
Hexacosanoic, C26:0
Pristanic Acid
Phytanic Acid
Triene Tetraene Ratio
Total Saturated
Total Monounsaturated
Total Polyunsaturated
Total w3
Total w6
Total Fatty Acids
Interpretation
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
Fasting Required (overnight fast). No alcohol consumption for 24 hours prior to draw. For pediatric patients, fasting is not required, but sample collection should occur prior to the next meal or scheduled feeding.
Minimum Volume
0.2 mL
Other Acceptable Specimens
Plasma collected in: EDTA (lavender-top) tube
Instructions
Patient age and gender are required for reporting.
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Non-fasting samples • Lipemic samples • Serum separator tube • Hemolysis
Methodology
Gas Chromatography/Tandem Mass Spectrometer
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Tues, Thurs, Sat; Report available: 5-7 days
Reference Range
See Laboratory Report
Clinical Significance
Comprehensive Fatty Acids (C8-C26), to evaluate patients for certain mitochondrial fatty acid oxidation defects, peroxisomal defects, and/or a full nutritional assessment. It can also be used to monitor patients receiving a special diet and/or fatty acid supplementation.
