BCR-ABL analysis is a genetic test used to detect the fusion between the BCR gene and the ABL gene, which is considered a key marker in the diagnosis of chronic myeloid leukemia (CML). This analysis is usually performed using polymerase chain reaction (PCR) technology to identify the presence of this fusion, helping assess the patient’s health status and guide the appropriate treatment plan. The test is essential for monitoring the patient’s response to therapy and predicting future outcomes, making it a vital tool in the management of leukemia.