Polymerase Chain Reaction/Sequencing
Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).
Transport 3 mL whole blood. (Min: 1 mL)
Ambient: 72 hours; Refrigerated: 1 week; Frozen: Unacceptable
Background Information for Very Long-Chain Acyl-CoA Dehydrogenase Deficiency (ACADVL) Sequencing:
Characteristics: Fatty acid beta-oxidation disorder leading to hypoketotic hypoglycemia, hepatic failure, Reye-like symptoms, cardiomyopathy, skeletal myopathy and sudden death. Clinical presentation varies in severity and age of onset.
Incidence: Approximately 1 in 40,000.
Inheritance: Autosomal recessive.
Cause: Deleterious ACADVL gene mutations.
Clinical Sensitivity: 80-90 percent.
Methodology: Bidirectional sequencing of the entire ACADVL coding region and intron-exon boundaries.
Analytical Sensitivity and Specificity: 99 percent.
Limitations: Diagnostic errors can occur due to rare sequence variations. Regulatory region mutations, deep intronic mutations, and large deletions/duplications will not be detected.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|2002002||VLCAD (ACADVL) Sequencing|
|2002003||VLCAD FGS Specimen|
- ACADVL sequencing assay