The lab analyst performs the technical lab test to evaluate BCR/ALB1 gene sequences that occur on chromosome 22 at breakpoints other than the major and minor breakpoints due to translocation, which involves breakage and reforming of an altered gene sequence. The test may be qualitative, which identifies the presence of the BCR/ALB1 fusion genes associated with the other breakpoints, or quantitative, which measures the amount of each fusion gene present.
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