CBC
Blood smear
Chem 7
Bone marrow biopsy
Anemia
Pancytopenia (in late disease)
Increased serum LDH
Criteria: The diagnosis of primary<unk>  requires meeting all 3 major criteria and 2 minor criteria.
or with increased marrow cellularity, granulocytic proliferation, and decreased erythropoiesis
Myelofibrosis
Polycythemia vera 
Myelodysplastic syndrome
Essential thrombocytosis 
Chronic myeloid leukemia
Chronic myelogenous leukemia 
Acute myeloid leukemia
Leukemoid Reaction