Sign in →

Test Code EGFRW EGFR Targeted Mutation Analysis with ALK Reflex, Tumor


Specimen Required


Pathology report must accompany specimen for testing to be performed.

 

Preferred:

Specimen Type: Tissue

Container/Tube: Tissue block

Collection Instructions: Submit a formalin-fixed, paraffin-embedded tissue block.

 

Acceptable:

Specimen Type: Tissue

Container/Tube: Slides

Specimen Volume: 12 unstained, positively charged, unbaked slides or 2 hematoxylin and eosin-stained slides (will not be returned) and 10 unstained, positively charged, unbaked slides

Collection Instructions: Submit 12 unstained, positively charged, unbaked slides cut at 5-microns or 2 hematoxylin and eosin-stained slides and 10 unstained, positively charged, unbaked slides with 5-micron thick sections of the tumor tissue.


Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

Molecular Genetics: Inherited Cancer Syndromes Patient Information (T519)

Oncology Test Request (T729)

Secondary ID

614666

Useful For

Identifying non-small cell lung cancers that may benefit from treatment with epidermal growth factor receptor -targeted therapies or anaplastic lymphoma kinase inhibitors

Additional Tests

Test ID Reporting Name Available Separately Always Performed
SLIRV Slide Review in MG No, (Bill Only) Yes

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
LCAF ALK (2p23), Lung Cancer, FISH, Ts Yes No

Testing Algorithm

When this test is ordered, the EGFR Gene, Mutation Analysis, 51 Mutation Panel, Tumor will always be performed. All specimens without an EGFR mutation will be automatically reflexed to testing for the ALK (2p23) rearrangement. Specimens with an identified EGFR mutation will result in cancellation of the LCAF test.

 

When this test is ordered, slide review will always be performed at an additional charge.

Method Name

Polymerase Chain Reaction (PCR)

Reporting Name

EGFR with ALK Reflex, Tumor

Specimen Type

Varies

Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

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

Reject Due To

Specimens that have been decalcified (all methods)
Low tumor percentage
Insufficient amount of tumor
Specimens that have not been formalin-fixed, paraffin-embedded		 Reject

Reference Values

An interpretive report will be provided.

Day(s) Performed

Monday through Friday

Report Available

5 to 14 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

81235-EGFR (epidermal growth factor receptor) (eg, non-small cell lung cancer) gene analysis, common variants(eg, exon 19 deletions, L858R, T790M, G719S, L861Q)

88381-Microdissection, manual

88271 x 2-DNA Probe (if appropriate)

88274-Interphase in situ hybridization (if appropriate)

88291-Interpretation and report (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
EGFRW EGFR with ALK Reflex, Tumor 21665-5

 

Result ID Test Result Name Result LOINC Value
616130 Result Summary 50397-9
616131 Result 21665-5
616132 Interpretation 69047-9
616133 Specimen 31208-2
616134 Source 31208-2
616135 Tissue ID 80398-1
616136 Released By 18771-6

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.