2 - 7 days
JAK2 c.1849G>T (V617F) Mutation
Tyrosine kinase Mutation
Janus kinase 2 gene Mutation
LEUKOCYTE ALKALINE PHOSPHATASE
JAK2 (V617F) Mutation Analysis
JAK2 (V617F) Mutation Shadow
Looking to order a test?
We’ve provided helpful links to make ordering easy.Find a Requisition
All specimens should be accompanied by a requisition.Submitting Specimens
Learn about how to properly label and where to ship specimens.Order Kits and Supplies
MLabs provides all the supplies necessary for the collection of specimens.Test FAQ
Visit our provider FAQ and learn about common questions to ordering tests.
Polymerase Chain Reaction (PCR)
Detection of the JAK2 c.1849G>T (V617F) mutation in myeloproliferative neoplasms: polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF). This test is indicated for evaluation of patients with unexplained and sustained elevation of red blood cell or platelet counts, splenomegaly or bone marrow fibrosis of undetermined causation, and patients in whom a diagnosis of a chronic myeloproliferative disorder is a consideration. The JAK2 V617F mutation is detectable in approximately 95% PV, 55% ET, and 65% PMF patients. A negative result does not rule out a diagnosis of PV, ET, or PMF.
Interpretive report provided.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Collect blood or bone marrow in a lavender top tube. Refrigerate and send intact blood or bone marrow specimen within 48 hours of collection. Fresh tissue (preferably 0.5cm3, sent in RPMI) and fresh aspirates or body fluids are acceptable. Refrigerate and send, preferably within 24 hours. Frozen tissue specimens – preferably frozen with 1 hour of collection – may also be sent frozen on dry ice. Fresh cell suspensions in RPMI should be refrigerated and sent, preferably within 48 hours. Frozen cell suspensions – preferably frozen with 1 hour of collection – may also be sent frozen on dry ice.