Tests that look closely at unusual cells, chromosomes, or proteins on cells can show what type or subtype of leukemia you have. These tests include:
A test that looks for certain changes in the cell chromosomes from a sample of blood or bone marrow (cytogenetic analysis).
A test that compares cancer cells to normal blood cells to find the specific kind of leukemia (immunophenotyping).
A test to look for genes that are "turned on" in several types of leukemia, such as acute myelogenous leukemia (AML). This test is called a reverse transcription-polymerase chain reaction test, or RT-PCR.
These tests can help guide treatment. Sometimes they can help your doctor and you know whether your leukemia is likely to go into remission or come back. In some cases, the tests can predict survival rates.
Your doctor may also order other tests, including: