Test directory: Very Long Chain Fatty Acids

Ordering Code6666
Test NameVery Long Chain Fatty Acids
AliasPeroxisomal Disorders
VLCFA
Preferred SpecimenSerum
Preferred ContainerPlain (Red)
Other Specimen/ContainerPlasma in EDTA, K2 (Lavender)
Optimum Volume1 mL
Collection InstructionsNo alcohol consumption for 24 hours prior to draw
Overnight fast required for non-pediatric patients
For pediatric patients, collect prior to the next meal
Patient age and gender are required for reporting.
Transport RequirementsOahu: Refrigerated
Airline: Refrigerated
Specimen StabilityAmbient: Not Stable
Refrigerated: 7 Days
Frozen: 28 Days
Rejection CriteriaHemolyzed, Lipemic, Serum Separator Tube (SST),
Non-fasting samples
Avail. StatNO
Analytic TimeUp to 2 Weeks
MethodologyLiquid Chromatography, Mass Spectrometry (LC/MS)
Reference Lab Quest Diagnostic Lab-NI

Reference range(s)

The reference ranges listed below are valid on this date of April 20, 2024.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
InterpretationALLSee report.
Phytanic AcidALLSee report.
Pristanic AcidALLSee report.
Docosanoic Acid, C22ALLSee report.
Tetracosanoic Acid, C24ALLSee report.
Hexacosanoic Acid, C26ALLSee report.
Ratio C24/C22ALLSee report.
Ratio C26/C22ALLSee report.
Ratio Pristanic/PhytanicALLSee report.