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Specimen Collection Manual and Test Catalog

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XOMEDXXPRESS, GENEDX (RESTRICTED TO GENETICS)

Geisinger Epic Procedure Code:  LAB3287    Geisinger Epic ID:  47624
Test Restriction:  ORDER LIMITED TO GENETICS, MFM, NICU

SPECIMEN COLLECTION
Specimen type: 

EDTA whole blood OR 2 buccal swabs


Preferred collection container: 
Alternate collection container: 
3 mL lavender-top (K2 EDTA) tube
Specimen required: 

3-6 mL EDTA whole blood OR 2 buccal swabs



SPECIMEN PROCESSING
Transport temperature: 

Refrigerated.


Specimen stability: 

Refrigerated: 7 days.



TEST DETAILS
Additional information: 

The XomeDxXpress test (Trio only) is whole exome sequencing with an expedited turnaround time (TAT) of approximately 2 weeks. A verbal result is given within 7 calendar days after the start of testing and will include pathogenic and/or expected pathogenic variants in known disease-causing genes (Human Genome Mutation Database genes). A written report including all clinically relevant, confirmed variants will be reported within approximately 2 weeks after the start of testing. Because of the rapid TAT, blood or DNA samples on the proband and both biological parents must be submitted at the same time, along with clinical information, in order to begin testing


CPT code(s):  81415, 81416 x2
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Methodology: 
Next Generation Sequencing
Synonyms: 

GeneDx test code 896, XPRSXO


Clinical significance: 

Determination of a clinical diagnosis. Identification of gene implicated in genetic disease. Recurrence risk assessment.


Review Date:  12/12/2024

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