2 questions about AML/ALL and CLL/CML

[Hemichordate]

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I know that the blast crisis in CML is when there are >20% myeloblasts in the blood, is there a similar blast crisis in CLL?

Also, what is the exact criteria to diagnose ALL: is there certain percentage of lymphoblasts that must be present (similar to the >20% myeloblast requirement for AML)?

 

[Myxedema]

CLL does not have "blast crisis" per se, but it can transform into more aggressive tumors, such as DLBCL. As for the diagnosis of ALL, "acute leukemia" part basically required =>%20 blast cells seen in bone marrow. Further typing requires immunophenotyping, flow cytometry or molecular methods like PCR.