Acylcarnitines, Quantitative

Last Modified: 2/4/2019 2:06:39 PM


Medical Necessity Documentation:  
Client Notes: Order Must Include
 A. Include family history, clinical condition (asymptomatic or acute episode), diet, and drug therapy information.
 B. Patient's age is required on request form for processing.
Patient Preparation:  
Specimen Requirements: 2.0 mL Plasma from a Green Top Tube - Na Heparin in a Plastic Vial
Collection Instructions: Collect just prior to a meal or feeding.
Minimum Volume: 0.5 mL
Transport & Storage: Temperature/Stability:

64 days Refrigerated

Reference Range:

Acetylcarnitine, C:2

1-7 days                2.14-15.89 nmol/mL
8 days-7 years    2.00-27.57 nmol/mL
> or = 8 years      2.00-17.83 nmol/mL

Propionylcarnitine, C3
1-7 days                <0.55 nmol/mL
8 days-7 years    <1.78 nmol/mL
> or = 8 years      <0.88 nmol/mL 

Iso-/Butyrylcarnitine, C4
1-7 days                <0.46 nmol/mL
8 days-7 years    <1.06 nmol/mL
> or = 8 years      <0.83 nmol/mL

 Isovaleryl-/2-Methylbutyrylcarnitine, C5
1-7 days                <0.38 nmol/mL
8 days-7 years    <0.63 nmol/mL
> or = 8 years      <0.51 nmol/mL

Hexanoylcarnitine, C6
1-7 days                <0.14 nmol/mL
8 days-7 years    <0.23 nmol/mL
> or = 8 years      <0.17 nmol/mL

3-OH-Hexanoylcarnitine, C6-OH
1-7 days                <0.08 nmol/mL
8 days-7 years    <0.19 nmol/mL
> or = 8 years      <0.09 nmol/mL

Octenoylcarnitine, C8:1
1-7 days                <0.48 nmol/mL
8 days-7 years    <0.91 nmol/mL
> or = 8 years      <0.88 nmol/mL

Octanoylcarnitine, C8
1-7 days                <0.19 nmol/mL
8 days-7 years    <0.45 nmol/mL
> or = 8 years      <0.78 nmol/mL

Decenoylcarnitine, C10:1
1-7 days                <0.25 nmol/mL
8 days-7 years    <0.46 nmol/mL
> or = 8 years      <0.47 nmol/mL

Decanoylcarnitine, C10
1-7 days                <0.27 nmol/mL
8 days-7 years    <0.91 nmol/mL
> or = 8 years      <0.88 nmol/mL

Glutarylcarnitine, C5-DC
1-7 days                <0.06 nmol/mL
8 days-7 years    <0.10 nmol/mL
> or = 8 years      0.11 nmol/mL 

Dodecenoylcarnitine, C12:1
1-7 days                <0.19 nmol/mL
8 days-7 years    <0.37 nmol/mL
> or = 8 years      <0.35 nmol/mL 

Dodecanoylcarnitine, C12
1-7 days                <0.18 nmol/mL
8 days-7 years    <0.35 nmol/mL
> or = 8 years      <0.26 nmol/mL 

3-OH-Dodecanoylcarnitine, C12-OH
1-7 days                <0.06 nmol/mL
8 days-7 years    <0.09 nmol/mL
> or = 8 years      <0.08 nmol/mL 

Tetradecadienoylcarnitine, C14:2
1-7 days                <0.09 nmol/mL
8 days-7 years    <0.13 nmol/mL
> or = 8 years      <0.18 nmol/mL 

Tetradecenoylcarnitine, C14:1
1-7 days                <0.16 nmol/mL
8 days-7 years    <0.35 nmol/mL
> or = 8 years      <0.24 nmol/mL 

Tetradecanoylcarnitine, C14
1-7 days                <0.11 nmol/mL
8 days-7 years    <0.15 nmol/mL
> or = 8 years      <0.12 nmol/mL

3-OH-Tetradecenoylcarnitine, C14:1-OH
1-7 days                <0.06 nmol/mL
8 days-7 years    <0.18 nmol/mL
> or = 8 years      <0.13 nmol/mL

3-OH-Tetradecanolycarnitine, C14-OH
1-7 days                <0.04 nmol/mL
8 days-7 years    <0.05 nmol/mL
> or = 8 years      <0.08 nmol/mL

Hexadecenoylcarnitine, C16:1
1-7 days                <0.15 nmol/mL
8 days-7 years    <0.21 nmol/mL
> or = 8 years      <0.10 nmol/mL 

Hexadecanoylcarnitine, C16
1-7 days                <0.36 nmol/mL
8 days-7 years    <0.52 nmol/mL
> or = 8 years      <0.23 nmol/mL

3-OH-Hexadecenoylcarnitine, C16:1-OH

1-7 days                <0.78 nmol/mL
8 days-7 years    <0.36 nmol/mL
> or = 8 years      <0.06 nmol/mL 

3-OH-Hexadecanoylcarnitine, C16-OH
1-7 days                <0.10 nmol/mL
8 days-7 years    <0.07 nmol/mL
> or = 8 years      <0.06 nmol/mL 

Linoleylcarnitine, C18:2
1-7 days                <0.12 nmol/mL
8 days-7 years    <0.31 nmol/mL
> or = 8 years      <0.24 nmol/mL 

Oleylcarnitine, C18:1
1-7 days                <0.25 nmol/mL
8 days-7 years    <0.45 nmol/mL
> or = 8 years      <0.39 nmol/mL 

Stearoylcarnitine, C18
1-7 days                <0.10 nmol/mL
8 days-7 years    <0.12 nmol/mL
> or = 8 years      <0.14 nmol/mL 

3-OH-Linoleylcarnitine, C18:2-OH
1-7 days                <0.04 nmol/mL
8 days-7 years    <0.06 nmol/mL
> or = 8 years      <0.06 nmol/mL 

3-OH-Oleylcarnitine, C18:1-OH
1-7 days                <0.03 nmol/mL
8 days-7 years    <0.04 nmol/mL
> or = 8 years      <0.06 nmol/mL

Critical Ranges:  
Test Comments:  
Methodology: Electrospray Tandem Mass Spectrometry (MS/MS)
Clinical Significance:

Diagnosis of fatty acid beta-oxidation disorders and several organic acidurias.

Documentation:  
Custom Panel: No

PRODUCTION SCHEDULE

Turn Around Time: 4 to 8 days
Days Performed: Monday, Tuesday, Wednesday, Thursday, Friday
Sites Performed: Mayo Laboratory
PHL Test Code: ACYL
EPIC Test Code: LAB429
Send Out Test Code: 82413
Alternate Test Names: Acylcarnitine, Plasma; Acylcarnitines, Quantitative, Plasma
Included Tests:  
CPT Coding: 82017

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