Exome Family Member

Abbrev Code:EXOFAM   
Order Code:LAB7036Order Name:Hereditary Exome Family Member
Synonyms:Whole Exome; Comparison Sample; Hereditary; Genetic Testing; Exome Sequencing, NGS, Multiple Congenital Anomalies
Methodology:Next generation sequencing
CPT Codes: 36415 x1
Turnaround Time:Performed Mon-Fri; turnaround time for exome sequencing could be up to 6 months.
Special Instructions:A signed informed consent in the patient's medical record is required; the consent should not be sent to the laboratory The link to the Genetic Testing Consent Form is provided as a convenience for the providers and genetic counselors. Bone Marrow Transplant patients: If a patient is the recipient of an allogeneic transplant, this test must be done on a pre-transplant sample. Contact the Molecular Diagnostics lab to see if a pre-transplant sample is available.
Associated Links:

NGS Whole Genome/Exome Testing Consent Form, NGS Order Instructions

Collection Instructions

Optimal Volume:10 mL
Minimum\Peds Volume:3 mL
Container:Yellow (ACD, Solution A) tube available from laboratory
Alternate Containers: Purple (EDTA)
Collection Instructions:Follow the NGS Order Instructions prior to sample collection. See Associated Links.

Blood: Collect 10 mL, 3 mL minimumin yellow ACD (Solution A) tube; alternate: Purple (EDTA)
Buccal Swabs: Contact MDL for swabs and instructions (612-273-8445).
Causes for Rejection:Frozen or clotted specimen, incorrect anticoagulant; specimen more than 5 days old. Sample collected from bone marrow transplant recipient. Samples tested in hematology using automated instrumentation not accepted. DNA extracted at non-CLIA certified (or equivalent) lab.

Processing and Shipping

Specimen Processing:Whole blood. Do not process. Store at room temperature.
Shipping Instructions:Ship at room temperature. Do not freeze.
Test Performed at or Referral Lab UM Molecular Diagnostics (M)  (UMMC East Bank)


Reference Range:See interpretive report.
Use:This assay is useful for clinical genetic diagnosis of Mendelian inherited disorders utilizing a next generation sequencing (NGS) platform. This platform allows simultaneous sequencing of a large number of genes using a single assay. Genomic DNA is extracted from the sample, and the sequencing libraries are prepared according to standard Illumina protocols using the TruSight One Sequencing Panel for enrichment of targeted genes. The enriched DNA libraries are sequenced on an Ilumina HiSeq 2500 instrument. Raw sequencing reads are mapped to the reference genome using BWA. Raw alignment files are realigned in the neighborhood of indels, and recalibrated for base quality accuracy using the Genome Analysis Tool Kit (GATK) Point mutation and indel calls in exons and adjoining intronic regions are made using the GATK Unified Genotyper. Variants are interpreted according to guidance issued by the American College of Medical Genetics.

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