Ordering Recommendation

Aids in identification of patients with essential fatty acid deficiency, evaluation of nutritional status, and diet monitoring.


Quantitative Gas Chromatography/Mass Spectrometry/Stable Isotope Dilution




7-10 days

New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.
Specimen Required
Patient Preparation

Green (Sodium Heparin), Lavender (K2EDTA), Yellow (ACD Solution A), or Protease Inhibitor tube (PPACK; Phe-Pro-Arg-chloromethylketone)  (ARUP supply #49662), available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. A winged collection set must be used.

Specimen Preparation

DO NOT FREEZE. Transport 6 mL whole blood. (Min: 2 mL)

Storage/Transport Temperature


Unacceptable Conditions

Gross hemolysis, frozen whole blood.


Patient age is required on the test request form. Include information regarding treatment, family history, and tentative diagnosis.


Ambient: 24 hours; Refrigerated: 7 days; Frozen: Unacceptable

Reference Interval

By Report

Interpretive Data

This test does not screen for disorders of peroxisomal biogenesis/function.

Compliance Category
Hotline History
CPT Codes


Component Test Code* Component Chart Name LOINC
3003087 Interpretation, Fatty Acids Profile RBC 49262-9
3003088 Myristic Acid, C14:0, RBC 35157-7
3003089 Palmitic Acid, C16:0, RBC 35161-9
3003090 Stearic Acid, C18:0, RBC 35149-4
3003091 Arachidic Acid, C20:0, RBC 35169-2
3003092 Palmitoleic Acid, C16:1w7, RBC 35162-7
3003093 Hexadecenoic Acid, C16:1w9, RBC 35155-1
3003094 Vaccenic Acid, C18:1w7, RBC 35167-6
3003095 a-Linolenic Acid, C18:3w3, RBC 35164-3
3003096 EPA, C20:5w3, RBC 35173-4
3003097 DPA, C22:5w3, RBC 35180-9
3003098 DHA, C22:6w3, RBC 35174-2
3003099 Linoleic Acid, C18:2w6, RBC 35165-0
3003100 g-Linolenic Acid, C18:3w6, RBC 35163-5
3003101 h-g-Linolenic C20:3w6, RBC 35171-8
3003102 Arachidonic Acid, C20:4w6, RBC 35168-4
3003103 DTA, C22:4w6, RBC 35182-5
3003104 DPA, C22:5w6, RBC 35181-7
3003105 Oleic Acid, C18:1w9, RBC 35166-8
3003106 Mead Acid, C20:3w9, RBC 35172-6
3003107 Docosenoic Acid, C22:1, RBC 35160-1
3003108 Nervonic Acid, C24:1w9, RBC 35170-0
3003109 Triene Tetraene Ratio, RBC 35411-8
3003110 Total Saturated Acid, RBC 35175-9
3003111 Total Monounsaturated Acid, RBC 35176-7
3003112 Total Polyunsaturated Acid, RBC 35177-5
3003113 Total w3, RBC 35178-3
3003114 Total w6, RBC 35179-1
3003115 Total Fatty Acids, RBC 24461-6
3003116 EER Fatty Acids Profile, Essential RBC 11526-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Fatty Acids Profile, Essential in Red Blood Cells