Lab Manual for Moffitt-Long and Mount Zion
Internal Resources
Acylcarnitine Profile
| Item |
Value |
| Approval req'd? |
No |
| Available Stat? |
No |
| Test code |
ACYLP |
| Performed by |
Lucille-Packard Children's Hospital |
| Sendout? |
Yes |
| Method |
Stable Isotope Dilution LC-MS/MS |
| Container type |
Dark Green (Na-Heparin) |
| Amount to Collect |
1 mL blood |
| Sample type |
Heparinized Plasma |
| Preferred volume |
0.5 mL plasma |
| Min. Volume |
0.3 mL plasma |
| Normal range |
see table |
| Synonyms |
Acyl-carnitine; C14:1 Carnitine; ; Long chain fatty acid oxidation defect; |
| Turn around times |
Testing is batched, twice weekly. Turnaround time 1 week. |
| Additional information |
For possible fatty acid oxidation abnormalities undetected by urinary organic acid analysis. Note that reference ranges differ for plasma vs. serum. Note that no analytic standards are yet available for hydroxylic and dicarboxylic acylcarnitines; for these analytes (marked with a *), response ratios to internal standards are given instead. Urine acylcarnitine profiles are of no predictive values and will not be run unless approved by the reference laboratory director. Elevation of C14:1- and to a lesser extent of C16:1- and C18:1-carnitine esters is characteristic of deficient activity of long-chain acyl-coenzyme A dehydrogenase. |