LCFA; VLCFA; Very Long Chain Fatty Acids
Back to Test Catalogue
Long Chain Fatty Acids, Serum/Plasma
Test ID: LCFAT
Orderable by Ontario ND
Test
Aliases/Synonyms
Method
LC-MS/MS
Report Includes
C26:0; C26:0/C22:0 ratio; C24:0/C22:0 ratio; Interpretation
Specimens
Serum; Plasma
Clinical Utility
This is a screening test for X-linked adrenoleukodystrophy. Affected males will have elevated parameters. Heterozygous females usually have elevated parameters, but they are often in the upper normal range. Other peroxisomal diseases may also be detected by this test (elevated parameters).
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
9-Feb-2024
Specimen
Specimens
Serum; Plasma
Collection Containers
Gold top (clot activator & gel); Lavender top (EDTA)
Sample Volume
2 mL
Minimum Volume
1.5 mL
Patient Preparation
Fasting specimen is preferred.
Collection & Handling
Collection Instructions
Collect fasting specimen.
Handling Information
Separate and freeze as soon as possible. Store and send frozen.
Stability
| Refrigerated | 7 days |
|---|---|
| Frozen | > 7 days |
Test Version
9-Feb-2024
Performance / Interpretation
Method
LC-MS/MS
Turnaround Time
15 days
Results
| Name | Units | Reference Range | Conversion Factor | |
|---|---|---|---|---|
| C26:0 | µmol/L |
|
||
| C26:0/C22:0 ratio | Ratio |
|
||
| C24:0/C22:0 ratio | Ratio |
|
||
| Interpretation | ||||
Sample Reports
Test Location
London Health Sciences Centre, 339 Windermere Road, London ON N6A 5A5
Test Version
9-Feb-2024
Interface / Setup
HL7 Interface Codes
| Order Code | Result Codes | Units |
|---|---|---|
| LCFAT | 3802C26 | umol/L |
| 3803C26/C22 Ratio | ||
| 3804C24/C22 Ratio | ||
| 3805LCFA Interp |
Sample Reports
Test Version
9-Feb-2024