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Lab Test Dictionary

Fatty Acid Panel, Essential (C12-C22), Serum (11254)


Gas Chromatography/Tandem Mass Spectrometer


Fatty Acid, Essential

Specimen Type

Serum or Plasma

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID


Lab Test Days

Tuesday, Thursday, Saturday

Standard TAT

5-7 Days

Collection Information

Specimen Required

1-2 mL Blood

Container Type

Red Top (No Additive)

Collection Instructions

Plasma collected in an EDTA (lavender-top) tube is also acceptable. 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.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room Temp=Unacceptable; Refrigerated=7 Days; Frozen=28 Days

Rejection Criteria

Hemolysis; Lipemia; Non-fasting samples; Serum separator tube (SST)

Test Volume Required

1 mL Serum or Plasma

Minimum Test Volume

0.2 mL Serum or Plasma

Included Tests

Lauric, C12:0 , Myristic, C14:0, 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, Nervonic, C24:1w9, Triene Tetraene Ratio, Total Saturated, Total Monounsaturated, Total Polyunsaturated, Total w3, Total w6

CPT Codes

82725, 82542