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Test Code JAK2DB JAK2 V617F Mutation Detection, Blood

Additional Codes

 

MAYO Test ID

JAK2B

EPIC Test ID

LAB2568

 

Reporting Name

JAK2 V617F Mutation Detection, B

Useful For

Aiding in the distinction between a reactive blood cytosis and a chronic myeloproliferative disorder in blood specimens

Testing Algorithm

The following algorithms are available in Special Instructions:

-Erythrocytosis Evaluation Testing Algorithm

-Myeloproliferative Neoplasm: A Diagnostic Approach to Peripheral Blood Evaluation

Method Name

Point Mutation Detection in DNA Using Quantitative Polymerase Chain Reaction (PCR)

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Whole Blood EDTA


Shipping Instructions


Specimen must arrive within 7 days (168 hours) of draw.



Specimen Required


Container/Tube:

Preferred: EDTA (lavender top)

Acceptable: ACD (yellow top)

Specimen Volume: 4 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send specimen in original tube.


Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood EDTA Ambient (preferred) 7 days
  Refrigerated  7 days

Reject Due To

Hemolysis

Mild OK; Gross reject

Lipemia

NA

Icterus

NA

Other

Moderately to severely clotted

Reference Values

An interpretive report will be provided.

Day(s) and Time(s) Performed

Monday through Friday; 12 p.m.

CPT Code Information

81270-JAK2 (Janus kinase 2) (eg, myeloproliferative disorder) gene analysis, p.Val617Phe (V617F) variant

LOINC Code Information

Test ID Test Order Name Order LOINC Value
JAK2B JAK2 V617F Mutation Detection, B 43399-5

 

Result ID Test Result Name Result LOINC Value
39722 JAK2 Result 53761-3
29590 JAK2 V617F Mutation Detection, B 43399-5

Test Classification

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

Analytic Time

2 days

Forms

1. Hematopathology Patient Information (T676) in Special Instructions

2. If not ordering electronically, complete, print, and send a Hematopathology/Cytogenetics Test Request Form (T726) with the specimen (http://www.mayomedicallaboratories.com/it-mmfiles/hematopathology-request-form.pdf).