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QHerit™ Expanded Carrier Screen
MessageFor Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.
Test Code
QHERIT
CPT Codes
81443, 81243, 81329
Includes
HBA1/HBA2, HBB, BLM, ASPA, DLD, ELP1/IKBKAP, ABCC8, FANCC, BGBA, GSDIA/G6PC, TMEM216, MSUD, MCOLN1, NEB, SMPD1, HEXA, PCDH15, CLRN1, FKTN, CFTR, FMR1, SMN1/SMN2
Preferred Specimen
1.5 mL whole blood collected in each of four EDTA (lavender-top) or ACD (yellow-top) tubes
Minimum Volume
1 mL in each of four tubes
Other Acceptable Specimens
Whole blood collected in a heparin (green-top) tubes
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 14 days
Refrigerated: 8 days
Frozen: Unacceptable
Refrigerated: 8 days
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Do not accept blood that is clotted, or shipped in damaged containers
Methodology
Polymerase Chain Reaction with Detection by Capillary Electrophoresis and Methylation Analysis • Multiplex Polymerase Chain Reaction • Massively Parallel Sequencing • Allele Specific Real-Time Polymerase Chain Reaction • ddCT Method
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon, Sat; Report available: 11-17 days (If reflex testing required, please add 6-8 days)
Reference Range
See Laboratory Report
Clinical Significance
The expanded carrier screen offers hotspot molecular detection of variants for one X-linked and multiple autosomal recessive disorders at the same time and allows testing of individuals regardless of ancestry or geographic origin. Carrier screening aims to identify couples who have an increased risk of having an affected child in order to facilitate informed reproductive decision making. As this is a screening test, this carrier panel is not intended to be used for diagnostic purposes. If diagnostic genetic testing is desired, please call Genomic Client Services (GENEINFO) at 866.436.3463 to discuss case with a Quest Genetic Counselor.
The expanded carrier screening panel (QHerit), analyzes 24 genes associated with 22 diseases, including: Alpha Thalassemia, Beta-Hemoglobinopathies (Including Sickle Cell Disease), Bloom Syndrome, Canavan Disease, Cystic Fibrosis (CFvantage), Dihydrolipoamide Dehydrogenase Deficiency, Familial Dysautonomia, Familial Hyperinsulinism, Fanconi Anemia Type C, Fragile X Syndrome, Gaucher Disease, Glycogen Storage Disease Type IA, Joubert Syndrome 2, Maple Syrup Urine Disease, Mucolipidosis Type IV, Nemaline Myopathy, Niemann-Pick Disease Type A, Spinal Muscular Atrophy, Tay-Sachs Disease, Usher Syndrome Type IF, Usher Syndrome Type IIIA, and Walker-Warburg Syndrome.
The expanded carrier screening panel (QHerit), analyzes 24 genes associated with 22 diseases, including: Alpha Thalassemia, Beta-Hemoglobinopathies (Including Sickle Cell Disease), Bloom Syndrome, Canavan Disease, Cystic Fibrosis (CFvantage), Dihydrolipoamide Dehydrogenase Deficiency, Familial Dysautonomia, Familial Hyperinsulinism, Fanconi Anemia Type C, Fragile X Syndrome, Gaucher Disease, Glycogen Storage Disease Type IA, Joubert Syndrome 2, Maple Syrup Urine Disease, Mucolipidosis Type IV, Nemaline Myopathy, Niemann-Pick Disease Type A, Spinal Muscular Atrophy, Tay-Sachs Disease, Usher Syndrome Type IF, Usher Syndrome Type IIIA, and Walker-Warburg Syndrome.
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano, CA 92675-2042 |
Last Updated: December 6, 2021
