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Test Code VHLE VHL Gene, Erythrocytosis, Mutation Analysis, Varies

Useful For

Diagnosis of suspected JAK2-negative VHL-related erythrocytosis associated with lifelong sustained increased RBC mass, elevated RBC count, hemoglobin, or hematocrit

Disease States

  • von Hippel-Lindau

Reporting Name

VHL Gene Erythrocytosis Mutations

Specimen Type

Varies


Specimen Required


Only orderable as part of a profile. For more information see HEMP / Hereditary Erythrocytosis Mutations.

 

This test is only available as a reflex from the HEMP / Hereditary Erythrocytosis Mutations. VHLE is not a single orderable test.


Specimen Minimum Volume

Blood: 1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Ambient (preferred)
  Frozen 
  Refrigerated 

Reject Due To

All specimens will be evaluated by Mayo Clinic Laboratories for test suitability.

Reference Values

Only orderable as part of a profile. For more information see HEMP / Hereditary Erythrocytosis Mutations.

 

An interpretive report will be provided.

Supportive Data

Accuracy of this assay was assessed by sequencing 25 specimens from patients with clear-cell renal cell carcinoma (cRCC) of which 6 (24%) showed pathogenic variants. These results are in agreement with published estimates of pathogenic variant rates of 29% to 61% for von Hippel-Lindau (VHL) in cRCC. Additionally, 2 specimens with known variants were tested. Sequences were 100% concordant with published data. Both inter- and intra-assay testing showed 100% consistency in sequencing. Fifteen normal specimens tested; all showed 100% normal sequences.

Day(s) Performed

Varies

Report Available

14 to 20 days

Specimen Retention Time

Whole Blood: 2 weeks (if available) Extracted DNA: 3 months

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

81404-VHL (von Hippel-Lindau tumor suppressor) (eg, von Hippel-Lindau familial cancer syndrome), full gene sequence

LOINC Code Information

Test ID Test Order Name Order LOINC Value
VHLE VHL Gene Erythrocytosis Mutations 82528-1

 

Result ID Test Result Name Result LOINC Value
37840 Result Summary 50397-9
37841 Result 82939-0
37842 Interpretation 69047-9
37886 Known Mut Reason for Referral 42349-1
37843 Additional Information 48767-8
37844 Specimen 31208-2
37845 Source 31208-2
37846 Released By 18771-6