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

This test is New York DOH approved.

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