Home PageHome Page


Test Code
Critical frozen
Important Links
Patient History For Biochemical Genetics
SynonymsVery Long-Chain and Branched-Chain Fatty Acids Profile; VLCFA and BCFA
Container TypeGreen top tube (sodium or lithium heparin)
Supply Item Numberpicture1398 or picture1594
Specimen TypePlasma
Preferred Volume0.5 mL
Emergency Minimum Volume0.2 mL
Patient PrepAdults: Fasting specimen preferred.
Infants and children: Draw specimen prior to feeding or 2-3 hours after a meal.
Specimen ProcessingSeparate plasma from cells within 45 minutes and transfer to a standard PAML aliquot tube and freeze immediately. CRITICAL FROZEN.
Store and TransportFrozen - Separate samples must be submitted when multiple tests are ordered.
Required Patient InfoClinical information is needed for appropriate interpretation. Additional required information includes age, gender, diet (e.g.TPN therapy), drug therapy, and family history
StabilityRoom Temp 1 day  Refrigerated 3 days  Frozen (-20 °C) 1 month; Freeze/thaw cycles: Stable x 1  
Unacceptable ConditionRoom temperature specimens greater than 24 hours; refrigerated specimens greater than 48 hours; specimens exposed to more than one freeze/thaw cycle
Alternate SpecimensLavender top tube (EDTA)
CPT Codes82726
Interface Order Code82726.Z19
Billing CodeFATTYP
Test ScheduleTue
Turnaround Time3-10 days
MethodLiquid Chromatography/Tandem Mass Spectrophotometry
NotesUse: Initial test to screen for disorders of peroxisomal biogenesis and/or function, including X-linked adrenoleukodystrophy and Zellweger syndrome.

Interface Codes
typeorder codetest descriptionresult coderesult descriptionunitsdecimal placesloinc code
r82726.Z19Fatty Acid Profile82726.Z10Fatty Acids Profile Interp  49263-7
r82726.Z19Fatty Acid Profile82726.Z11Pristanic Acidumol/L222761-1
r82726.Z19Fatty Acid Profile82726.Z12Phytanic Acideumol/L222671-2
r82726.Z19Fatty Acid Profile82726.Z13Ratio Pristanic to Phytanic 230550-8
r82726.Z19Fatty Acid Profile82726.Z14C22:0 Behenic Acidumol/L230194-5
r82726.Z19Fatty Acid Profile82726.Z15C24:0 Tetracosanoic Acidumol/L230195-2
r82726.Z19Fatty Acid Profile82726.Z16C26:0 Hexacosanoic Acidumol/L230197-8
r82726.Z19Fatty Acid Profile82726.Z17Ratio C24:0 to C22:0 230196-0
r82726.Z19Fatty Acid Profile82726.Z18Ratio C26:0 to C22:0 330198-6