Test Overview
Test Methodology

Stable Isotope Dilution Gas Chromatography / Mass Spectrometry (GC/MS)

Test Usage

Investigation of adrenoleukodystrophy, adrenomyeloneuropathy (AMN), and Zellweger's syndrome, diagnosis of Refsum's disease, or to aid in assessment of peroxisomal function.

Reference Range *

Age specific reference ranges provided with report.

Test Limitations

Liver diseases, ketonemia, and starvation may compound interpretation of metabolite patterns in young patients.

Test Details
Days Set Up
Monday - Friday
Analytic Time

4 - 8 days

Soft Order Code
POX
MiChart Code
Fatty Acids Profile, Peroxisomal (Mayo)
Synonyms
  • Fatty Acids, Very Long Chain
  • Long Chain Fatty Acids
  • Peroxisomal Panel
  • Phytanatic Acid
  • Phytanic Acid
  • Pristanic Acid
  • Very Long Chain Fatty Acids
  • VLFA
  • PEROXISOMAL PANEL, SERUM
  • C22:0
  • C24:0
  • C24:0/C22:
  • C26:0
  • C26:0/C22:
  • COMMENTS:
  • PHYTANIC
  • PRIS/PHYT
  • PRISTANIC
  • C24:0/C22:0 RATIO
  • C26:0/C22:0 RATIO
  • COMMENTS
  • PRISTANIC/PHYTANIC ACID RATIO
Laboratory
Sendout
Reference Laboratory
Mayo POX (81369)
Section
Special Testing
Specimen Requirements
Collection

Collect specimen in red top or SST tube from a fasting patient (12 - 14 hour fast). Centrifuge within 45 minutes of collection, aliquot serum into a plastic tube and freeze. Patient must not consume alcohol for 24 hours before collection of specimen.

Special Handling

Fasting specimen. Must arrive in lab or aliquot and freeze within 45 minutes.

Yellow Top Tube
Normal Volume
0.5 mL fasting serum
Minimum Volume
0.2 mL fasting serum
Additional Information

Test sent to Mayo Medical Laboratories.

Billing
CPT Code
82726
Fee Code
32122
LOINC
43674-1
NY State Approved
No