Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

FATTY ACID PROFILE OF LIPIDS

General Information

Lab Order Codes:

FAPR

Synonyms:

Fatty Acid Profile, Essential (C12-C22), Serum

CPT Codes:

82544 - Column chromatography/mass spectrometry, analyte not elsewhere specified; stable isotope dilution, multiple analytes, quantitative, single stationary and mobile phase

Test Includes:

See Reference Range

Logistics

Test Indications:

Useful for evaluating deficiency of essential and other nutritionally beneficial fatty acids. Treatment of essential fatty acid deficiency depends on the cause of the disorder and may include nutritional supplementation of essential fatty acids, linoleic acid (C18:2w6) and alpha-linolenic acid (18:3w3).

Lab Testing Sections:

Chemistry - Sendouts

Referred to:

Mayo Medical Laboratories (MML Test: FAPM/82426)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

3 – 7 days, test set up Monday - Friday

Special Instructions:

See Patient Preparation, include information regarding treatment, family history, and tentative diagnosis.

Specimen

Specimen Type:

Blood

Container:

Red top tube

Draw Volume:

1.5 mL (Minimum: 0.5 mL) blood.

Processed Volume:

0.5 mL (Minimum: 0.15 mL) serum

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Centrifuge specimen and aliquot serum into a plastic screw- capped round bottom vial. Store and ship at frozen temperatures. Forward promptly.

Patient Preparation:

Overnight (12-14 hour) fast recommended. Patient must not consume any alcohol for 24 hours before the specimen is drawn.

Sample Rejection:

Specimens other than serum or plasma; anticoagulants other than EDTA or heparin; warm specimens; mislabeled or unlabeled specimens

Interpretive

Reference Range:

Fatty Acid nmol/mL

1 - 31 days

32 days - 1 year

1 - 17 years

≥18 years

Lauric Acid, C12:0

6 - 190

6 - 190

5 - 80

6 - 90

Myristic Acid, C14:0

30 - 320

30 - 320

40 - 290

30 - 450

Hexadecenoic Acid, C16:1w9

21 - 69

21 - 69

24 - 82

25 - 105

Palmitoleic Acid, C16:1w7

20 - 1020

20 - 1020

100 - 670

110 - 1130

Palmitic Acid, C16:0

720 - 3120

720 - 3120

960 - 3460

1480 - 3730

γ-Linolenic Acid, C18:3w6

6 - 110

6 - 110

9 - 130

16 - 150

α-Linolenic Acid, C18:3w3

10 - 190

10 - 190

20 - 120

50 - 130

Linolenic Acid, C18:2w6

350 - 2660

1000 - 3300

1600 - 3500

2270 - 3850

Oleic Acid, C18:1w9

250 - 3500

250 - 3500

350 - 3500

650 - 3500

Vaccenic Acid, C18:1w7

140 - 720

140 - 720

320 - 900

280 - 740

Stearic Acid, C18:0

270 - 1140

270 - 1140

280 - 1170

590 - 1170

EPA, C20:5w3

2 - 60

2 - 60

8 - 90

14 - 100

Arachidonic Acid, C20:4w6

110 - 1110

110 - 1110

350 - 1030

520 - 1490

Mead Acid, C20:3w9

8 - 60

3 - 24

7 - 30

7 - 30

h-γ-Linolenic Acid, C20:3w6

30 - 170

30 - 170

60 - 220

50 - 250

Arachidic Acid, C20:0

30 - 120

30 - 120

30 - 90

50 - 90

DHA, C22:6w3

10 - 220

10 - 220

30 - 160

30 - 250

DPA, C22:5w6

3 - 70

3 - 70

10 - 50

10 - 70

DPA, C22:5w3

6 - 110

6 - 110

30 - 270

20 - 210

DTA, C22:4w6

2 - 50

2 - 50

10 - 40

10 - 80

Docosenoic Acid, C22:1

2 - 20

2 - 20

4 - 13

4 - 13

Nervonic Acid, C24:1w9

30 - 150

30 - 150

50 - 130

60 - 100

Triene/Tetraene Ratio

0.017 - 0.083

0.013 - 0.050

0.013 - 0.050

0.010 - 0.038

Values Expressed as mmol/L

       

Total Saturated Acid

1.2 - 4.6

1.2 - 4.6

1.4 - 4.9

2.5 - 5.5

Total Monounsaturated Acid

0.3 - 4.6

0.3 - 4.6

0.5 - 4.4

1.3 - 5.8

Total Polyunsaturated Acid

1.1 - 4.9

1.1 - 4.9

1.7 - 5.3

3.2 - 5.8

Total w3

0.0 - 0.4

0.0 - 0.4

0.1 - 0.5

0.2 - 0.5

Total w6

0.9 - 4.4

0.9 - 4.4

1.6 - 4.7

3.0 - 5.4

Total Fatty Acids

3.3 - 14.0

3.3 - 14.0

4.4 - 14.3

7.3 - 16.8

Critical Values:

N/A

Limitations:

For nutritional assessment, a 12-14 hour fast is required.

Methodology:

Gas chromatography/Mass spectrometry (GC-MS), Stable isotope dilution.

References:

Mayo Medical Laboratories Web Page (September 2012)

Updates:

12/23/2010: Units update. No change in reference ranges.



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