GeneSeq® PLUS, HEXA
Also known as: Tay-Sachs disease
Use
This test is used for carrier and diagnostic testing for Tay-Sachs disease.
Special Instructions
Variants of uncertain significance (VUS) will be reported unless VUS opt-out is indicated on the requisition. Test orders must include an attestation that the provider has the patient's informed consent for genetic testing. If requesting full gene sequencing for multiple genes, order GeneSeq® PLUS [482370]. To test fetal specimens, including cord blood, order GeneSeq® PLUS, Fetal Analysis [482389].
Limitations
Technologies used do not detect germline mosaicism and do not rule out the presence of large chromosomal aberrations including rearrangements and gene fusions, or variants in regions or genes not included in this test, or possible inter/intragenic interactions between variants or repeat expansions. False positive or false negative results may occur for reasons such as rare genetic variants, pseudogene interference, blood transfusions, bone marrow transplantation, somatic or tissue-specific mosaicism, mislabeled samples, or erroneous representation of family relationships. This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.
Methodology
NGS (Targeted)
Biomarkers
LOINC Codes
- 19102-3
- 19102-3
- 42784-9
- 31208-2
- 89993-0
- 42349-1
- 76033-0
- 53039-4
- 8262-8
- 62385-0
- 55752-0
- 8251-1
- 49549-9
- 75608-0
- 72486-4
- 51969-4
Result Turnaround Time
14-21 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
8.5 mL
Minimum Volume
3 mL
Container
Yellow-top (ACD-A) tube or lavender-top (EDTA) tube
Collection Instructions
Standard phlebotomy; follow PurFlock buccal swab kit or Oragene Dx 500 saliva kit collection instructions. Do not eat, drink, smoke or chew gum 30 minutes prior to collection.
Storage Instructions
Maintain specimen at room temperature or refrigerate at 4°C. Do not freeze.
Causes for Rejection
Frozen or hemolyzed specimen; quantity not sufficient for analysis; improper container
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 30 days |