A preliminary diagnosis of leukemia can be made by clinical manifestations and routine blood tests. If you want to confirm the diagnosis, you need to undergo bone marrow aspiration. 1. Leukemia is a type of malignant neoplastic disease of the hematopoietic system, in which patients will have symptoms such as anemia, bleeding, infection, etc., and some of them will also be accompanied by pleural effusion, proteinuria, hematuria, amenorrhea and other symptoms. Patients undergo routine blood tests, which can reveal abnormalities in platelets, white blood cells, white blood cell ratio or count, and primitive and naïve cells can be seen in white blood cells. 2. To confirm the diagnosis of leukemia, further bone marrow biopsy is required, in which a sample of the bone marrow is taken through the iliac bone, etc., and laboratory tests are performed to look for leukemia cells. Also, the characteristics and typing of the cells can be used to develop a treatment plan. If you experience any of these symptoms, you need to seek medical attention to diagnose whether you have leukemia. Once diagnosed with leukemia, you need to maintain a good mood and actively cooperate with doctors to avoid delaying the condition, which may endanger your health.