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CARNITINE FREE AND TOTAL

Mnemonic

CARN FT

Specimen Collection Requirements

Collect

Plasma, one green (sodium or lithium heparin) top tube, also acceptable: plain red top tube

Handling

Separate plasma from cells and freeze ASAP. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered. Avoid hemolysis.

Preferred Volume

0.5 mL

Minimum Volume

0.2 mL (0.60 mL minimum whole blood draw)

Transport

Frozen

Rejection Criteria

Ambient specimens, specimens refrigerated more than 12 hours

Stability

AFTER SEPARATION FROM CELLS: Ambient: Unacceptable; Refrigerated: 12 hours; Frozen: 1 month, avoid repeated freeze/thaw cycles

Testing Information

Performed

Tue - Sat

Reported

2-6 days

Method

Tandem Mass Spectrometry

Referral Lab

ARUP (80068)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

82379

Last Updated: Thursday, January 5, 2017 03:40:43 AM


Client Services: 503-413-1234