87450:PHYTANIC ACID
Author PeaceHealth Laboratories
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| Edit Date: |
4/5/2010 |
| Performed: |
Varies |
| Released: |
30-45 days after setup at PeaceHealth Laboratories’ reference lab |
| CPT Code: |
82491-90 |
| Specimen Collection Details |
| Collection: |
One 4 mL lavender top tube (EDTA). |
| Handling: |
Centrifuge and separate plasma into a plastic vial. Freeze within 1 hours of collection. Include clinical indications, diagnosis, and medications. |
| Standard Volume: |
3 mL plasma |
| Minimum Volume: |
0.5 mL plasma |
| Transport: |
Frozen on dry ice. |
| Comments: |
For diagnosis of Refsum disease, useful but not definitive for diagnosis of Zellweger syndrome and other peroxisome assembly disorders; very long chair fatty acids, plasma should be ordered to rule out these disorders. If both phytanic and very long chain fatty acids are to be done, one need only draw a single 1-3 mL blood specimen. |
| Rejection Criteria: |
Thawing or thawed specimen. |