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JAK2 Mutation

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Also known as: Janus Kinase 2
Formal name: JAK2 V617F; JAK2 Exon 12 Mutation

At a Glance

Why Get Tested?

To help diagnose bone marrow disorders characterized by overproduction of one or more types of blood cells known as myeloproliferative neoplasms (MPNs)

When to Get Tested?

When your doctor suspects that you may have a bone marrow disorder, including polycythemia vera, essential thrombocythemia, or primary myelofibrosis

Sample Required?

A blood sample drawn from a vein in your arm; sometimes a sample of bone marrow

Test Preparation Needed?