VHL Full Gene Analysis
Use
This test evaluates individuals with a personal or family history that suggests Von Hippel-Lindau (VHL) syndrome. It helps establish a diagnosis of VHL and allows for targeted cancer surveillance based on associated risks. The test identifies genetic variants linked to increased VHL syndrome risk, facilitating predictive testing for at-risk family members.
Special Instructions
Not provided.
Limitations
There are regions in genes that may not be effectively evaluated due to technical limitations like regions of homology and high GC content. Next-generation sequencing might not detect all genomic variants; false-negative or false-positive results are possible. The test may not differentiate between somatic and germline variants or detect low mosaicism levels. If a patient has had an allogeneic hematopoietic stem cell transplant or a recent blood transfusion, the presence of donor DNA might lead to inaccurate results. Deletion and duplication analysis might not achieve single exon resolution due to sequence coverage limitations or genomic complexity.
Methodology
NGS (Targeted)
Biomarkers
VHL
Gene
LOINC Codes
- 82533-1 - VHL gene Del+Dup + Full Mut Anl Bld/T
- 62364-5 - Test performance info Spec
- 31208-2 - Specimen source
- 50397-9 - Mol dx interp Bld/T Ql
- 82939-0 - Genetic variant details Bld/T
- 69047-9 - Geneticist review
- 99622-3 - Patient resource info
- 48767-8 - Annotation comment Imp
- 85069-3 - Lab test method
- 48018-6 - Gene studied ID
- 18771-6 - Provider signing name
Result Turnaround Time
21-28 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
3 mL
Minimum Volume
1 mL
Container
Lavender top (EDTA) or yellow top (ACD), acceptable: Green top (Sodium heparin)
Collection Instructions
Invert several times to mix blood. Send whole blood specimen in original tube. Do not aliquot.
Storage Instructions
Ambient 4 days/Refrigerated 4 days/Frozen 4 days
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 4 days |
| Refrigerated | 4 days |
| Frozen | 4 days |
