Rai staging system


A system used to describe the extent (stage) of chronic lymphocytic leukemia (CLL).

The 5 stages (I through V) in the Rai system are based on the extent of the disease in the body and the levels of lymphocytes (a type of white blood cell), red blood cells and platelets in the blood.

Compare with Binet staging system.

Medical disclaimer

The information that the Canadian Cancer Society provides does not replace your relationship with your doctor. The information is for your general use, so be sure to talk to a qualified healthcare professional before making medical decisions or if you have questions about your health.

We do our best to make sure that the information we provide is accurate and reliable but cannot guarantee that it is error-free or complete.

The Canadian Cancer Society is not responsible for the quality of the information or services provided by other organizations and mentioned on cancer.ca, nor do we endorse any service, product, treatment or therapy.

1-888-939-3333 | cancer.ca | © 2024 Canadian Cancer Society