Frequency of Polycythemia in Individuals With Normal Complete Blood Cell Counts According to the New 2016 WHO Classification of Myeloid Neoplasms

The isolated use of the proposed Hb/Hct levels as a definer of polycythemia may lead to a substantial increase in unnecessary diagnostic tests. In cases with borderline levels of hemoglobin, the diagnostic workup of polycythemia vera should only be indicated in the presence of clinical and/or laboratorial features associated with myeloproliferative neoplasms.

Int J Lab Hematol