Figure 1.
Algorithm for evaluation of MPN phenotype with erythrocytosis. *Test JAK2 V617F first and exon 12 JAK2 mutations if V617F is negative. CML, chronic myeloid leukemia; Epo, erythropoietin; F, female; M, male; MK, megakaryocytes; PLT, platelet; WBC, white blood cell.