A Patient Is Suspected of Having Leukemia and the Provider

A patient is suspected of having leukemia and the provider orders biochemical studies and a bone marrow aspirate and biopsy. The results include white blood cells (WBCs) greater than 200,000 cells/mm³ normal red blood cells (RBCs) , hyperplastic myeloid cells, and the absence of serum leukocyte alkaline phosphatase. Which test will the provider order to confirm a diagnosis in this patient?

A) Chest radiograph
B) Coagulation studies
C) Philadelphia chromosome test
D) Serum protein electrophoresis