ARUP's Laboratory Test Directory

Medium Chain Acyl-CoA Dehydrogenase Deficiency (ACADM) Sequencing : 0051758
[ image for: Patient History for MCAD]
Patient History for MCAD
  


Mnemonic: MCAD FGS

Methodology: Polymerase Chain Reaction/Sequencing
Performed: Varies
Reported: Within 21 days
Specimen Required: Collect: Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).

Specimen Preparation: Transport 3 mL whole blood. (Min: 1 mL)

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): Ambient: 72 hours; Refrigerated: 1 week; Frozen: Unacceptable

Interpretive Data: Background Information for Medium Chain Acyl-CoA Dehydrogenase Deficiency (ACADM) Sequencing:
Characteristics:
Limited mitochondrial fatty acid beta-oxidation leading to hypoglycemia, lethargy, seizures, hypoketotic dicarboxylic aciduria, vomiting, hepatomegaly, hepatic failure, encephalopathy, and sudden death. Manifestations often triggered by prolonged fasting or other metabolic stressors.
Incidence:
1 in 15,000.
Inheritance:
Autosomal recessive.
Cause:
Deleterious ACADM gene mutations.
Clinical Sensitivity:
95 to 99 percent
Methodology:
Polymerase chain reaction (PCR) followed by bidirectional sequencing of the entire coding region and intron/exon boundaries of the ACADM gene.
Analytical Sensitivity and Specificity:
99 percent.
Limitations:
Rare diagnostic errors can occur due to primer site mutations. Regulatory region mutations, deep intronic mutations, and large deletion/duplications will not be detected.



Counseling and informed consent are recommended for genetic testing. Consent forms are available online at www.aruplab.com.

Refer to Statement C under Testing Information at http://www.aruplab.com.
CPT Code(s): 83891 Isolation; 83898 x 12 Amplification; 83904 x 12 Sequencing; 83909 capillary electrophoresis; 83912 Interpretation and report. - Additional CPT code modifiers may be required for procedures performed to test for oncologic or inherited disorders.
Cross References: MCAD ACADM (Medium Chain Acyl-CoA Dehydrogenase Deficiency (ACADM) Sequencing)
 
 

 

 

 
All ARUP Sites:        www.aruplab.com     ·     www.arupconsult.com     ·     www.arup.utah.edu     ·     www.childx.org     ·     www.utahblood.org