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Carnitine, Free & Total

Carnitine, Free and Total

Alternate Test Name

Free Carnitine; Carnitine, Plasma

Epic Mnemonic
Sunquest Mnemonic

LAB815
CARNB

Category

Sendouts

Methodology

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

Test Performance Schedule

Monday through Friday

Result Availability

2 - 5 days

Specimen Required

Container

Green top (sodium heparin) tube
Acceptable: Lithium heparin, EDTA

Volume

Pref. Vol.: 0.5 mL plasma
Min. Vol.: 0.2 mL plasma

Collection Instructions

• Routine venipuncture
• Immediately after collection, gently invert tube 5-10 times
• Promptly centrifuge 15 minutes
• Immediately transfer plasma to plastic tube
• Freeze

Transportation Instructions

Frozen

Stability

After separation from cells:
• Room temperature: 7 days
• Refrigerated: 21 days
• Frozen (preferred): 60 days

Causes for Rejection

Plasma gel tube

Remarks

Green top, Sodium Heparin is preferred collection tube. A lavender top EDTA is acceptable. Lithium Heparin green tube is also acceptable, but it must be a non-gel Lithium Heparin tube.

CPT Codes

82379

Effective/Revised

8/20/2019

Clinical Significance

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Trending on Lakeland

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The Corewell Health™ Center for Wellness has moved to a spacious new building around the corner from its original facility. The new space is approximately 24,000 square feet - nearly 20 times larger than the previous location, adding adequate room to expand community-based health services.

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Corewell Health welcomed two new members to its board of directors in Southwest Michigan. Bertha King and Stephen Hempel, M.D., began three-year terms on Jan. 1, 2024.

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