Fatty Acid Profile, Essential, Serum


Sunquest Code:FAPE  
Epic Code:LAB5838Epic Name:Fatty Acid Essential Test
Synonyms:C12-C22, Fatty Acid Profile
Methodology:Gas chromatography/Mass specrtometry/ Stable isotope dilution
CPT Code:82542
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 4-7 days.
Special Instructions:Provide patient age on the request form. Include information regarding treatment, family history and tentative diagnosis. For nutritional assessment, a 12 to 14 hour fast is required; however, infants or persons suspected of having a fatty acid oxidation disorder should not fast before testing owing to the possibility of acute metabolic decompensation. Instead, collect the specimen after the longest fast possible, just before feeding.


Collection Instructions

Specimen:Blood
Optimal Volume:1 mL
Minimum\Peds Volume:0.5 mL
Container:Red or gold (gel) (Red (no gel))
Patient Preparation:Patient must fast overnight (12-14 hours). Patient must not consume any alcohol within 24 hours prior to sample collection.
Causes for Rejection:Grossly lipemic specimen


Processing and Shipping

Specimen Processing:Separate serum from cells within 45 minutes of collection. Centrifuge and aliquot 0.5 mL, 0.15 mL minimum. Samples are stable refrigerated for 24 hours or frozen for 90 days
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Lab Sendouts  (Mayo)
Referral Lab number:FAPEP


Interpretive

Reference Range:

 

nmol/mL

Lauric Acid, C12:0

Less than 1 y: 6-190

1-17 y: 5-80

18 y or older: 6-90

Myristic Acid, C14:0

Less than 1 y: 30-320

1-17 y: 40-290

18 y or older: 30-450

Hexadecenoic Acid, C16:1w9

Less than 1 y: 21-69

1-17 y: 24-82

18 y or older: 25-105

Palmitoleic Acid, C16:1w7

Less than 1 y: 20-1020

1-17 y: 100-670

18 y or older: 110-1130

Palmitic Acid, C16:0

Less than 1 y: 720-3120

1-17 y: 960-3460

18 y or older: 1480-3730

Gamma-Linolenic Avid, C18:3w6

Less than 1 y: 6-110

1-17 y: 9-130

18 y or older: 16-150

Alpha-Linolenic Acid C18:3w3

Less than 1 y: 10-190

1-17 y: 20-120

18 y or older: 50-130

Linoleic Acid, C18:2w6

1-31 d: 350-2660

32 d-11 mo: 1000-3300

1-17 y: 1600-3500

18 y or older: 2270-3850

Oleic Acid, C18:1w9

Less than 1 y:250-3500

1-17 y: 350-3500

18 y or older: 650-3500

Vaccenic Acid, C18:1w7

Less than 1 y: 140-720

1-17 y: 320-900

18 y or older: 280-740

Stearic Acid, C18:0

Less than 1 y: 270-1140

1-17 y: 280-1170

18 y or older: 590-1170

EPA, C20:5w3

Less than 1 y: 2-60

1-17 y: 8-90

18 y or older: 14-100

Arachidonic Acid, C29:4w6

Less than 1 y:110-1110

1-17 y: 350-1030

18 y or older: 520-1490

Mead Acid, C20:3w9

1-31 d: 8-60

32 d-11 mo: 3-24

1-17 y: 7-30

18 y or older: 7-30

Homo-Gamma-Linolenic, C20:3w6

Less than 1 y: 30-170

1-17 y: 60-220

18 y or older: 50-250

Arachidic Acid, C20:0

Less than 1 y: 30-120

1-17 y: 30-90

18 y or older: 50-90

DHA, C22:6w3

Less than 1 y: 10-220

1-17 y: 30-160

18 y or older: 30-250

DPA, C22:5w6

Less than 1 y: 3-70

1-17 y: 10-50

18 y or older: 10-70

DPA, C22:5w3

Less than 1 y: 6-110

1-17 y: 30-270

18 y or older: 20-210

DTA, C22:4w6

Less than 1 y: 2-50

1-17 y: 10-40

18 y or older: 10-80

Docosenoic Acid, C22:1

Less than 1 y: 2-20

1-17 y: 4-13

18 y or older: 4-13

Nervonic Acid, C24:1w9

Less than 1 y: 30-150

1-17 y: 50-130

18 y or older: 60-100

Triene/Tetraene Ratio

1-31 d: 0.017-0.083

32 d -17 y: 0.013-0.050

18 y or older: 0.010-0.038

Total Saturated Acid

Less than 1 y: 1.2-4.6

1-17 y: 1.4-4.9

18 y or older: 2.5-5.5

Total Monounsaturated Acid

Less than 1 y: 0.3-4.6

1-17 y: 0.5-4.4

18 y or older: 1.3-5.8

Total Polyunsaturated Acid

Less than 1 y: 1.1-4.9

1-17 y: 1.7-5.3

18 y or older: 3.2-5.8

Total w3

Less than 1 y: 0.0-0.4

1-17 y: 0.1-0.5

18 y or older: 0.2-0.5

Total w6

Less than 1 y: 0.9-4.4

1-17 y: 1.6-4.7

18 y or older: 3.0-5.4

Total Fatty Acids

Less than 1 y: 3.3-14.0

1-17 y: 4.4-14.3

18 y or older: 7.3-16.8

 

 



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