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FATTY ACID PROFILE, PEROXISOMAL (C22-C26), SERUM

Mnemonic

FA PROFILE

Synonym

Very Long Chain Fatty Acids (VLCFA) - Refsum Disease - Zellweger Syndrome

Includes

Concentrations of C22:0, C24:0, C26:0 species, Phytanic acid and Pristanic acid, calculated C24:0/C22:0, C26:0/C22:0 and phytanic acid/pristanic acid ratios

Specimen Collection Requirements

Patient Preparation

Fasting over night (12-14 hours). Patient must not consume alcohol for 24 hours before the specimen is drawn.

Collect

Serum, plain, red or gold (SST) top tube

Handling

Spin specimen down within 45 minutes of draw. Include information regarding treatment, family history, and tentative diagnosis.

Preferred Volume

0.50 mL

Minimum Volume

0.15 mL

Transport

Frozen

Rejection Criteria

Plasma

Stability

Ambient: Unacceptable; Refrigerated: 15 days; Frozen: 92 days

Testing Information

Performed

Mon - Fri

Reported

5-7 days

Method

Gas Chromatography-Mass Spectrometry (GC-MS), Stable Isotope Dilution Analysis

Referral Lab

Mayo Medical Laboratory (POX)

Reference Values

Reference Values

Interpretation provided.

CPT Codes

82726

Last Updated: Wednesday, September 27, 2017 04:20:27 PM


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