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Test Code 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


Patient Preparation: Collect specimen just prior to a scheduled meal or feeding.

Collection Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Submission Container/Tube: Plastic vial

Specimen Volume: 0.1 mL

Collection Instructions: Centrifuge and aliquot serum.


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

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 Special Container
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, Wednesday, Thursday, Friday; 8 a.m.

Performing Laboratory

Mayo Clinic 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 30191-1
92135 Acrylylcarnitine, C3:1 43235-1
92136 Propionylcarnitine, C3 30551-6
92137 Formiminoglutamate, FIGLU 79628-4
92138 Iso-/Butyrylcarnitine, C4 35655-0
92139 Tiglylcarnitine, C5:1 51416-6
92140 Isovaleryl-/2-Methylbutyrylcarn C5 30531-8
92141 3-OH-iso-/butyrylcarnitine, C4-OH 39000-5
92142 Hexenoylcarnitine, C6:1 74540-6
92143 Hexanoylcarnitine, C6 30358-6
92144 3-OH-isovalerylcarnitine, C5-OH 39001-3
92145 Benzoylcarnitine 39615-0
92146 Heptanoylcarnitine, C7 55871-8
92147 3-OH-hexanoylcarnitine, C6-OH 30236-4
92148 Phenylacetylcarnitine 90237-9
92149 Salicylcarnitine 90238-7
92150 Octenoylcarnitine, C8:1 30541-7
92151 Octanoylcarnitine, C8 30540-9
92152 Malonylcarnitine, C3-DC 55940-1
92153 Decadienoylcarnitine, C10:2 53471-9
92154 Decenoylcarnitine, C10:1 30328-9
92155 Decanoylcarnitine, C10 30327-1
92156 Methylmalonyl-/succinylcarn, C4-DC 51415-8
92157 3-OH-decenoylcarnitine, C10:1-OH 82478-9
92158 Glutarylcarnitine, C5-DC 30349-5
92159 Dodecenoylcarnitine, C12:1 30332-1
92160 Dodecanoylcarnitine, C12 30331-3
92161 3-Methylglutarylcarnitine, C6-DC 39002-1
92162 3-OH-dodecenoylcarnitine, C12:1-OH 59195-8
92163 3-OH-dodecanoylcarnitine, C12-OH 30233-1
92164 Tetradecadienoylcarnitine, C14:2 30564-9
92165 Tetradecenoylcarnitine, C14:1 30566-4
92166 Tetradecanoylcarnitine, C14 30565-6
92167 Octanedioylcarnitine, C8-DC 39014-6
92168 3-OH-tetradecenoylcarnitine C14:1OH 30190-3
92169 3-OH-tetradecanoylcarnitine, C14-OH 30238-0
92170 Hexadecenoylcarnitine, C16:1 30357-8
92171 Hexadecanoylcarnitine, C16 30356-0
92172 3-OH-hexadecenoylcarnitine,C16:1-OH 30235-6
92173 3-OH-hexadecanoylcarnitine, C16-OH 30234-9
92174 Octadecadienoylcarnitine, C18:2 30534-2
92175 Octadecenoylcarnitine, C18:1 30542-5
92176 Octadecanoylcarnitine, C18 30560-7
92177 Dodecanedioylcarnitine, C12-DC 55855-1
92178 3-OH-octadecadienoylcarn, C18:2-OH 30237-2
92179 3-OH-octadecenoylcarnitine C18:1-OH 30312-3
92180 3-OH-octadecanoylcarnitine, C18-OH 35656-8
92181 Comment (ACRNS) 46252-3

Forms

If not ordering electronically, complete, print, and send an Inborn Errors of Metabolism Test Request (T798) with the specimen.