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Test Mnemonic PFAPE Fatty Acid Profile, Essential, Plasma

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)

Method Name

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

Reporting Name

Fatty Acid Profile, Essential, P

Specimen Type

Plasma


Specimen Required


Collection Container/Tube:

Preferred: Green top (sodium heparin)

Acceptable: EDTA or lithium heparin

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. Fasting overnight (12-14 hours).

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

3. Spin down within 45 minutes of draw.

Additional Information:

1. Patient's age is required.

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


Specimen Minimum Volume

0.15 mL

Specimen Stability Information

Specimen Type Temperature Time
Plasma 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; 7 a.m.

Performing Laboratory

Mayo Medical Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

82542

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PFAPE Fatty Acid Profile, Essential, P 43676-6

 

Result ID Test Result Name Result LOINC Value
36549 Lauric Acid, C12:0 35150-2
36550 Myristic Acid, C14:0 35157-7
36551 Hexadecenoic Acid, C16:1w9 35155-1
36552 Palmitoleic Acid, C16:1w7 35162-7
36553 Palmitic Acid, C16:0 35161-9
36554 g-Linolenic Acid, C18:3w6 35163-5
36555 a-Linolenic Acid, C18:3w3 35164-3
36556 Linoleic Acid, C18:2w6 35165-0
36557 Oleic Acid, C18:1w9 35166-8
36558 Vaccenic Acid, C18:1w7 35167-6
36559 Stearic Acid, C18:0 35149-4
36560 EPA, C20:5w3 35173-4
36561 Arachidonic Acid, C20:4w6 35168-4
36562 Mead Acid, C20:3w9 35172-6
36563 h-g-Linolenic, C20:3w6 35171-8
36564 Arachidic Acid, C20:0 35169-2
36565 DHA, C22:6w3 35174-2
36566 DPA, C22:5w6 35181-7
36567 DPA, C22:5w3 35180-9
36568 DTA, C22:4w6 35182-5
36569 Docosenoic Acid, C22:1 35160-1
36570 Nervonic Acid, C24:1w9 35170-0
36571 Triene Tetraene Ratio 35411-8
36572 Total Saturated Acid In Process
36573 Total Monounsaturated Acid 35176-7
36574 Total Polyunsaturated Acid 35177-5
36575 Total w3 35178-3
36576 Total w6 35179-1
36577 Total Fatty Acids 24461-6
36578 Interpretation (PFAPE) 59462-2