Laboratory tests might include: full blood count, liver enzymes, renal function and erythrocyte sedimentation rate. If the cause for the high platelet count remains unclear, bone marrow biopsy is often undertaken, to differentiate whether the high platelet count is reactive or essential.
Thrombocythemia
Leukostasis
Thrombocytopenia
Red cell agglutination
Leukocytosis
Lycopenemia
Reticulocytosis
Cytopenia