2. What is CML ? Chronic myeloid leukemia is a cancer of the blood system in which too many white blood cells (WBCs) are made in the bone marrow.
3.
4.
5. CML dIAGnoSIS Blood Test Blood cell counts. With CML, the red cell count is lower than normal. The number of white cells is higher than normal and may be very high. Blood cell examination. A person with CML has a small number of developing cells called "blast cells" in his or her blood. Blast cells are not found in the blood of healthy individuals. Bone Marrow Test Samples of marrow cells are examined under a microscope. This is called a cytogenetic analysis. The examiner looks at a map of the chromosomes in the cell. The map is called a "karyotype." The Ph chromosome in a CML cell can be detected on the karyotype.