You will receive additional blood tests (about 1 tablespoon each) at the time of entry on the study and after about every 2 to 4 courses of chemotherapy while on the study. These blood tests help better define the severity of your high blood sugar and your body's ability to metabolize sugar. Any bone marrow and blood samples that were collected before your therapy for your leukemia may be used for lab tests to measure markers of glucose metabolism in the blood. You will not be required to have a bone marrow biopsy after enrollment on study.