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Test ID ACRNS Acylcarnitines, Quantitative, Serum


Necessary Information


1. Patient's age is required.

2. Include family history, clinical condition (asymptomatic or acute episode), diet, and drug therapy information.



Specimen Required


Specimen Type: Serum

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.1 mL

Collection Instructions: Draw specimen just prior to a scheduled meal or feeding.


Useful For

Diagnosis of fatty acid oxidation disorders and several organic acidurias in serum specimens

 

Evaluating treatment during follow-up of patients with fatty acid beta-oxidation disorders and several organic acidurias

Testing Algorithm

The following algorithms are available in Special Instructions:

-Newborn Screening Follow-up for Elevations of C8, C6, and C10 Acylcarnitines (also applies to any plasma or serum C8, C6, and C10 acylcarnitine elevations)

-Newborn Screening Follow-up for Isolated C4 Acylcarnitine Elevations (also applies to any plasma or serum C4 acylcarnitine elevation)

-Newborn Screening Follow-up for Isolated C5 Acylcarnitine Elevations (also applies to any plasma or serum C5 acylcarnitine elevation)

Method Name

Flow Injection Analysis-Tandem Mass Spectrometry (FIA-MS/MS)

Reporting Name

Acylcarnitines, Quantitative, S

Specimen Type

Serum

Specimen Minimum Volume

0.04 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 60 days
  Refrigerated  21 days
  Ambient  72 hours

Reference Values

≤7 days (nmol/mL)

8 days-7 years

(nmol/mL)

≥8 years

(nmol/mL)

Acetylcarnitine, C2

2.14-15.89

2.00-27.57

2.00-17.83

Acrylylcarnitine, C3:1

<0.04

<0.05

<0.07

Propionylcarnitine, C3

<0.55

<1.78

<0.88

Formiminoglutamate, FIGLU

<0.43

<0.08

<0.14

Iso-/Butyrylcarnitine, C4

<0.46

<1.06

<0.83

Tiglylcarnitine, C5:1

<0.05

<0.09

<0.11

Isovaleryl-/2-Methylbutyrylcarn C5

<0.38

<0.63

<0.51

3-OH-iso-/butyrylcarnitine, C4-OH

<0.13

<0.51

<0.18

Hexenoylcarnitine, C6:1

<0.12

<0.10

<0.15

Hexanoylcarnitine, C6

<0.14

<0.23

<0.17

3-OH-isovalerylcarnitine, C5-OH

<0.08

<0.12

<0.10

Benzoylcarnitine

<0.13

<0.07

<0.10

Heptanoylcarnitine, C7

<0.05

<0.05

<0.06

3-OH-hexanoylcarnitine, C6-OH

<0.08

<0.19

<0.09

Phenylacetylcarnitine

<0.15

<0.22

<0.29

Salicylcarnitine

<0.08

<0.09

<0.09

Octenoylcarnitine, C8:1

<0.48

<0.91

<0.88

Octanoylcarnitine, C8

<0.19

<0.45

<0.78

Malonylcarnitine, C3-DC

<0.09

<0.14

<0.26

Decadienoylcarnitine, C10:2

<0.11

<0.12

<0.26

Decenoylcarnitine, C10:1

<0.25

<0.46

<0.47

Decanoylcarnitine, C10

<0.27

<0.91

<0.88

Methylmalonyl-/succinylcarn, C4-DC

<0.05

<0.05

<0.05

3-OH-decenoylcarnitine, C10:1-OH

<0.12

<0.12

<0.13

Glutarylcarnitine, C5-DC

<0.06

<0.10

<0.11

Dodecenoylcarnitine, C12:1

<0.19

<0.37

<0.35

Dodecanoylcarnitine, C12

<0.18

<0.35

<0.26

3-Methylglutarylcarnitine, C6-DC

<0.28

<0.21

<0.43

3-OH-dodecenoylcarnitine, C12:1-OH

<0.11

<0.10

<0.13

3-OH-dodecanoylcarnitine, C12-OH

<0.06

<0.09

<0.08

Tetradecadienoylcarnitine, C14:2

<0.09

<0.13

<0.18

Tetradecenoylcarnitine, C14:1

<0.16

<0.35

<0.24

Tetradecanoylcarnitine, C14

<0.11

<0.15

<0.12

Octanedioylcarnitine, C8-DC

<0.25

<0.19

<0.19

3-OH-tetradecenoylcarnitine C14:1OH

<0.06

<0.18

<0.13

3-OH-tetradecanoylcarnitine, C14-OH

<0.04

<0.05

<0.08

Hexadecenoylcarnitine, C16:1

<0.15

<0.21

<0.10

Hexadecanoylcarnitine, C16

<0.36

<0.52

<0.23

3-OH-hexadecenoylcarnitine,C16:1-OH

<0.78

<0.36

<0.06

3-OH-hexadecanoylcarnitine, C16-OH

<0.10

<0.07

<0.06

Octadecadienoylcarnitine, C18:2

<0.12

<0.31

<0.24

Octadecenoylcarnitine, C18:1

<0.25

<0.45

<0.39

Octadecanoylcarnitine, C18

<0.10

<0.12

<0.14

Dodecanedioylcarnitine, C12-DC

<0.10

<0.04

<0.04

3-OH-octadecadienoylcarn, C18:2-OH

<0.04

<0.06

<0.06

3-OH-octadecenoylcarnitine C18:1-OH

<0.03

<0.04

<0.06

3-OH-octadecanoylcarnitine, C18-OH

<0.03

<0.05

<0.03

Day(s) and Time(s) Performed

Monday through Friday; 8 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

82017

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ACRNS Acylcarnitines, Quantitative, S 43433-2

 

Result ID Test Result Name Result LOINC Value
92134 Acetylcarnitine, C2 In Process
92135 Acrylylcarnitine, C3:1 In Process
92136 Propionylcarnitine, C3 In Process
92137 Formiminoglutamate, FIGLU In Process
92138 Iso-/Butyrylcarnitine, C4 In Process
92139 Tiglylcarnitine, C5:1 In Process
92140 Isovaleryl-/2-Methylbutyrylcarn C5 In Process
92141 3-OH-iso-/butyrylcarnitine, C4-OH In Process
92142 Hexenoylcarnitine, C6:1 In Process
92143 Hexanoylcarnitine, C6 In Process
92144 3-OH-isovalerylcarnitine, C5-OH In Process
92145 Benzoylcarnitine In Process
92146 Heptanoylcarnitine, C7 In Process
92147 3-OH-hexanoylcarnitine, C6-OH In Process
92148 Phenylacetylcarnitine No LOINC Needed
92149 Salicylcarnitine No LOINC Needed
92150 Octenoylcarnitine, C8:1 In Process
92151 Octanoylcarnitine, C8 In Process
92152 Malonylcarnitine, C3-DC In Process
92153 Decadienoylcarnitine, C10:2 In Process
92154 Decenoylcarnitine, C10:1 In Process
92155 Decanoylcarnitine, C10 In Process
92156 Methylmalonyl-/succinylcarn, C4-DC In Process
92157 3-OH-decenoylcarnitine, C10:1-OH In Process
92158 Glutarylcarnitine, C5-DC In Process
92159 Dodecenoylcarnitine, C12:1 In Process
92160 Dodecanoylcarnitine, C12 In Process
92161 3-Methylglutarylcarnitine, C6-DC In Process
92162 3-OH-dodecenoylcarnitine, C12:1-OH In Process
92163 3-OH-dodecanoylcarnitine, C12-OH In Process
92164 Tetradecadienoylcarnitine, C14:2 In Process
92165 Tetradecenoylcarnitine, C14:1 In Process
92166 Tetradecanoylcarnitine, C14 In Process
92167 Octanedioylcarnitine, C8-DC In Process
92168 3-OH-tetradecenoylcarnitine C14:1OH In Process
92169 3-OH-tetradecanoylcarnitine, C14-OH In Process
92170 Hexadecenoylcarnitine, C16:1 In Process
92171 Hexadecanoylcarnitine, C16 In Process
92172 3-OH-hexadecenoylcarnitine,C16:1-OH In Process
92173 3-OH-hexadecanoylcarnitine, C16-OH In Process
92174 Octadecadienoylcarnitine, C18:2 In Process
92175 Octadecenoylcarnitine, C18:1 In Process
92176 Octadecanoylcarnitine, C18 In Process
92177 Dodecanedioylcarnitine, C12-DC In Process
92178 3-OH-octadecadienoylcarn, C18:2-OH In Process
92179 3-OH-octadecenoylcarnitine C18:1-OH In Process
92180 3-OH-octadecanoylcarnitine, C18-OH In Process
92181 Comment (ACRNS) In Process