 <unk> or blood is examined under light microscopy , as well as flow <unk> , to <unk> the presence of leukemia , to differentiate AML from other types of leukemia ( e.g. acute <unk> leukemia - ALL ) , and to classify the subtype of disease . A sample of marrow or blood is typically also tested for chromosomal abnormalities by routine cytogenetics or fluorescent in situ <unk> . Genetic studies may also be performed to look for specific mutations in genes such as FLT3 , <unk> , and KIT , which may influence the outcome of the disease . 
