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Test Mnemonic FAPEP Fatty Acid Profile, Essential, Serum

Reporting Name

Fatty Acid Profile, Essential, S

Useful For

Evaluating the nutritional intake and intestinal absorption of essential fatty acids

 

Identifying deficiency of essential and other nutritionally beneficial fatty acids

 

Monitoring treatment of patients with essential fatty acid deficiencies who are receiving linoleic acid (C18:2w6) and alpha-linolenic acid (C18:3w3)

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Serum


Necessary Information


1. Patient's age is required.      

2. Include information regarding treatment, family history, and tentative diagnosis.



Specimen Required


Patient Preparation:

1. Patient should fast overnight (12-14 hours).

2. Patient must not consume any alcohol for 24 hours before the specimen is drawn.

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions: Spin down within 45 minutes of draw.


Specimen Minimum Volume

0.15 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 92 days
  Refrigerated  72 hours

Reference Values

Lauric Acid, C12:0

<1 year: 6-190 nmol/mL

1-17 years: 5-80 nmol/mL

≥18 years: 6-90 nmol/mL

 

Myristic Acid, C14:0

<1 year: 30-320 nmol/mL

1-17 years: 40-290 nmol/mL

≥18 years: 30-450 nmol/mL

 

Hexadecenoic Acid, C16:1w9

<1 year: 21-69 nmol/mL

1-17 years: 24-82 nmol/mL

≥18 years: 25-105 nmol/mL

 

Palmitoleic Acid, C16:1w7

<1 year: 20-1,020 nmol/mL

1-17 years: 100-670 nmol/mL

≥18 years: 110-1,130 nmol/mL

 

Palmitic Acid, C16:0

<1 year: 720-3,120 nmol/mL

1-17 years: 960-3,460 nmol/mL

≥18 years: 1,480-3,730 nmol/mL

 

Gamma-Linolenic Acid, C18:3w6

<1 year: 6-110 nmol/mL

1-17 years: 9-130 nmol/mL

≥18 years: 16-150 nmol/mL

 

Alpha-Linolenic Acid, C18:3w3

<1 year: 10-190 nmol/mL

1-17 years: 20-120 nmol/mL

≥18 years: 50-130 nmol/mL

 

Linoleic Acid, C18:2w6

≤31 days: 350-2,660 nmol/mL

32 days-11 months: 1,000-3,300 nmol/mL

1-17 years: 1,600-3,500 nmol/mL

≥18 years: 2,270-3,850 nmol/mL

 

Oleic Acid, C18:1w9

<1 year: 250-3,500 nmol/mL

1-17 years: 350-3,500 nmol/mL

≥18 years: 650-3,500 nmol/mL

 

Vaccenic Acid, C18:1w7

<1 year: 140-720 nmol/mL

1-17 years: 320-900 nmol/mL

≥18 years: 280-740 nmol/mL

 

Stearic Acid, C18:0

<1 year: 270-1,140 nmol/mL

1-17 years: 280-1,170 nmol/mL

≥18 years: 590-1,170 nmol/mL

 

EPA, C20:5w3

<1 year: 2-60 nmol/mL

1-17 years: 8-90 nmol/mL

≥18 years: 14-100 nmol/mL

 

Arachidonic Acid, C20:4w6

<1 year: 110-1,110 nmol/mL

1-17 years: 350-1,030 nmol/mL

≥18 years: 520-1,490 nmol/mL

 

Mead Acid, C20:3w9

≤31 days: 8-60 nmol/mL

32 days-11 months: 3-24 nmol/mL

1-17 years: 7-30 nmol/mL

≥18 years: 7-30 nmol/mL

 

Homo-Gamma-Linolenic C20:3w6

<1 year: 30-170 nmol/mL

1-17 years: 60-220 nmol/mL

≥18 years: 50-250 nmol/mL

 

Arachidic Acid, C20:0

<1 year: 30-120 nmol/mL

1-17 years: 30-90 nmol/mL

≥18 years: 50-90 nmol/mL

 

DHA, C22:6w3

<1 year: 10-220 nmol/mL

1-17 years: 30-160 nmol/mL

≥18 years: 30-250 nmol/mL

 

DPA, C22:5w6

<1 year: 3-70 nmol/mL

1-17 years: 10-50 nmol/mL

≥18 years: 10-70 nmol/mL

 

DPA, C22:5w3

<1 year: 6-110 nmol/mL

1-17 years: 30-270 nmol/mL

≥18 years: 20-210 nmol/mL

 

DTA, C22:4w6

<1 year: 2-50 nmol/mL

1-17 years: 10-40 nmol/mL

≥18 years: 10-80 nmol/mL

 

Docosenoic Acid, C22:1

<1 year: 2-20 nmol/mL

1-17 years: 4-13 nmol/mL

≥18 years: 4-13 nmol/mL

 

Nervonic Acid, C24:1w9

<1 year: 30-150 nmol/mL

1-17 years: 50-130 nmol/mL

≥18 years: 60-100 nmol/mL

 

Triene/Tetraene Ratio

≤31 days: 0.017-0.083

32 days-17 years: 0.013-0.050

≥18 years: 0.010-0.038

 

Total Saturated Acid

<1 year: 1.2-4.6 mmol/L

1-17 years: 1.4-4.9 mmol/L

≥18 years: 2.5-5.5 mmol/L

 

Total Monounsaturated Acid

<1 year: 0.3-4.6 mmol/L

1-17 years: 0.5-4.4 mmol/L

≥18 years: 1.3-5.8 mmol/L

 

Total Polyunsaturated Acid

<1 year: 1.1-4.9 mmol/L

1-17 years: 1.7-5.3 mmol/L

≥18 years: 3.2-5.8 mmol/L

 

Total w3   

<1 year: 0.0-0.4 mmol/L

1-17 years: 0.1-0.5 mmol/L

≥18 years: 0.2-0.5 mmol/L

 

Total w6

<1 year: 0.9-4.4 mmol/L

1-17 years: 1.6-4.7 mmol/L

≥18 years: 3.0-5.4 mmol/L

 

Total Fatty Acids

<1 year: 3.3-14.0 mmol/L

1-17 years: 4.4-14.3 mmol/L

≥18 years: 7.3-16.8 mmol/L

Day(s) and Time(s) Performed

Monday through Friday; 7a.m.

CPT Code Information

82542

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FAPEP Fatty Acid Profile, Essential, S In Process

 

Result ID Test Result Name Result LOINC Value
17021 Lauric Acid, C12:0 35150-2
17022 Myristic Acid, C14:0 35157-7
17023 Hexadecenoic Acid, C16:1w9 35155-1
17024 Palmitoleic Acid, C16:1w7 35162-7
17025 Palmitic Acid, C16:0 35161-9
17026 g-Linolenic Acid, C18:3w6 35163-5
17027 a-Linolenic Acid, C18:3w3 35164-3
17028 Linoleic Acid, C18:2w6 35165-0
17029 Oleic Acid, C18:1w9 35166-8
17030 Vaccenic Acid, C18:1w7 35167-6
17031 Stearic Acid, C18:0 35149-4
17032 EPA, C20:5w3 35173-4
17033 Arachidonic Acid, C20:4w6 35168-4
17034 Mead Acid, C20:3w9 35172-6
17035 h-g-Linolenic, C20:3w6 35171-8
17036 Arachidic Acid, C20:0 35169-2
17037 DHA, C22:6w3 35174-2
17038 DPA, C22:5w6 35181-7
17039 DPA, C22:5w3 35180-9
17040 DTA, C22:4w6 35182-5
17041 Docosenoic Acid, C22:1 35160-1
17042 Nervonic Acid, C24:1w9 35170-0
17043 Triene Tetraene Ratio 35411-8
17044 Total Saturated Acid 35175-9
17045 Total Monounsaturated Acid 35176-7
17046 Total Polyunsaturated Acid 35177-5
17047 Total w3 35178-3
17048 Total w6 35179-1
17049 Total Fatty Acids 24461-6
17054 Interpretation 59462-2

Method Name

Gas Chromatography-Mass Spectrometry (GC-MS) Stable Isotope Dilution Analysis

Test Classification

This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared or approved by the U.S. Food and Drug Administration.