FATTY ACID PROFILE COMPREHENSIVE (C8 - C26) SERUM
General Information
HLAB/HOL Code: FA826
UPHSM LIS Test #: 028464
Schedule:
Testing Time: 3-5 Days
Testing Lab: Mayo
UPHSM LIS Test #: 028464
Schedule:
Testing Time: 3-5 Days
Testing Lab: Mayo
Specimen Info
Only 1 specimen type required, unless otherwise specified
Volume: 0.5 mL
Temperature: Frozen
Tube Type: Serum
Collection Info:
Patient Preparation:
1. For nutritional assessment, patient should fast overnight (12-14 hours); for patients with a suspected fatty acid oxidation disorder, collect prior to next feeding as fasting is contraindicated.
2. Patient must not consume any alcohol for 24 hours before the specimen is collected.
Include information regarding treatment, family history, and tentative diagnosis.
Preferred: Red top
Acceptable: Serum gel
Temperature: Frozen
Tube Type: Serum
Collection Info:
Patient Preparation:
1. For nutritional assessment, patient should fast overnight (12-14 hours); for patients with a suspected fatty acid oxidation disorder, collect prior to next feeding as fasting is contraindicated.
2. Patient must not consume any alcohol for 24 hours before the specimen is collected.
Include information regarding treatment, family history, and tentative diagnosis.
Preferred: Red top
Acceptable: Serum gel
Specimen Acceptability
REJECT DUE TO:
Gross hemolysis: OK
Gross lipemia: Reject
Gross icterus: OK
Gross hemolysis: OK
Gross lipemia: Reject
Gross icterus: OK
Methods
Gas Chromatography-Mass Spectrometry (GC-MS) Stable Isotope Dilution
Clinical Utilities
Monitoring patients undergoing diet therapy for mitochondrial or peroxisomal disorders (possibly inducing essential fatty acid deficiency in response to restricted fat intake) using serum
specimens
Monitoring treatment of essential fatty acid deficiency
Monitoring the response to provocative tests (fasting tests, loading tests)
This test is not the recommended initial screening test for evaluating patients with possible peroxisomal disorders, single-enzyme defects of peroxisomal metabolism such as X-linked adrenoleukodystrophy, or peroxisomal biogenesis disorders (Zellweger syndrome spectrum). For these purposes, the preferred tests are either POXP / Fatty Acid Profile, Peroxisomal (C22-C26), Plasma or POX / Fatty Acid Profile, Peroxisomal (C22-C26), Serum.
specimens
Monitoring treatment of essential fatty acid deficiency
Monitoring the response to provocative tests (fasting tests, loading tests)
This test is not the recommended initial screening test for evaluating patients with possible peroxisomal disorders, single-enzyme defects of peroxisomal metabolism such as X-linked adrenoleukodystrophy, or peroxisomal biogenesis disorders (Zellweger syndrome spectrum). For these purposes, the preferred tests are either POXP / Fatty Acid Profile, Peroxisomal (C22-C26), Plasma or POX / Fatty Acid Profile, Peroxisomal (C22-C26), Serum.
CPT Codes
82542
* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
Reference Range
see separate ranges sent with report