Very Long Chain Acyl-CoA Dehydrogenase Deficiency


Very Long Chain Acyl-CoA Dehydrogenase Deficiency

Laboratory Fee Schedule

Procedure #:  BAU0145Z

CPT:  81406

Very Long Chain Acyl-CoA Dehydrogenase Deficiency
 Synonym(s):  VLCAD DNA
 Requisition Form G-1B
 Test Description Very long-chain acyl-CoA dehydrogenase gene sequencing
 Pre-Approval Needed N/A
 Supplemental Information   Required N/A
 Supplemental Form(s) N/A
 Performed on Specimens   from (sources)

 Human

 Sample/Specimen Type for   Testing
  • Dried filter paper blood spot
  • EDTA anticoagulated (purple top tube) whole blood
 Minimum Volume/Size   Required
  • One ½ inch dried filter paper blood spot
  • 1mL whole blood
 Storage/Preservation Prior to   Shipping

 Dried filter paper blood specimens

  • Allow card to dry thoroughly at room temperature in a horizontal position for at least 3 hours. Do NOT allow specimen to touch any surface.
  • Keep specimen away from heat and direct sunlight.
  • Cover dried specimen with attached flap.

 Whole blood specimens 

  • Refrigerate whole blood samples until shipment.
 Transport Medium EDTA acceptable for whole blood
 Specimen Labeling Two patient-specific identifiers required (e.g., patient full name, date of birth, Medical record number)
 Shipping and Specimen   Handling Requirements Ship all specimens according to Dangerous Good Regulations, IATA, and/or CFR 49.

 Must include one completed G-1B form per specimen.  

 DRIED FILTER PAPER BLOOD SPECIMENS

  • U.S. Postal regulations require Double containment of dried blood filter paper specimens. Ensure specimens are thoroughly dried prior to placing in envelope.
  • 1st containment: Use the attached wrap-around cover with printed universal biohazard symbol. Do not put biohazard labels on outside of envelope.
  • 2nd containment: Place dried filter paper blood specimen in an envelope that is not hermetically sealed. Do not put specimens in plastic bags.
  • Ship as soon as possible; within 24hrs of collection. 
  • Avoid temperatures greater than 100°F. 

 WHOLE BLOOD SHIPPING REQUIREMENT 

  • Refrigerate sample until shipment.
  • Whole blood specimens must be shipped overnight at room temperature or refrigerated and received within 7 days of collection
  • U.S. Postal regulations require Triple containment: See instructions on how to triple contain a specimen for shipping. 
 Method PCR Amplification and Sanger Sequencing
 Turn-around Time Within 14 working days
 Interferences/Limitations
  •  Pathogenic intronic variants, large deletions/duplications, or whole gene deletions/duplications may not be identified by this methodology.  Test results should not be used as a diagnostic test but should be interpreted in the context of clinical findings, family history, and other laboratory data.
  • Please refer to the disclaimer(s) on the individual laboratory report(s) and/or contact the laboratory for additional information.
 Common Causes for Rejection
  •  Use of expired collection device
  • No date of collection provided
  • Missing/invalid patient demographic information
  • Kit serial number on patient demographic form does not match the kit serial number on the specimen filter paper
  • Specimen too old
  • Insufficient blood
  • Incomplete saturation, contamination, or caked, clotted or layered blood. 

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 Additional Information Additional information for specimen collection:




Last updated June 9, 2022