Lymphocyte ratio (LY%)

Lymphocyte ratio (LY%) is the percentage of lymphocytes in the total white blood cell count. Peripheral blood smears are observed by wright staining. White blood cells can be divided into 5 types, namely neutrophils, eosinophils, and hobby. Alkaline granulocytes, lymphocytes and monocytes. Lymphocytes (L) are a kind of white blood cells, which are produced by lymphoid lymphocytes and are important cellular components of the body's immune response function. Can be divided into large lymphocytes and small lymphocytes, the former diameter of 10-15um, accounting for 10%, the latter diameter of 6-10um, accounting for 90%. The cell body is round or elliptical. Mature lymphocytes need to rely on antigen stimulation to differentiate and proliferate, and then exert their immune function. Basic Information Specialist classification: cardiovascular examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Tips: Keep a normal mindset. Normal value The lymphocyte ratio is 20%-40%. Lymphocyte detection belongs to the clinical routine blood test. The morphology and ratio of lymphocytes can be observed by counting and classifying white blood cells. Clinical significance 1, lymphocytosis (lymphocytosis) is mainly seen in infectious diseases, and mainly viral infections, such as measles, chickenpox, mumps, viral hepatitis, epidemic hemorrhagic fever, can also be found in whooping cough, tuberculosis, Brucellosis, Syphilis and so on. In addition, lymphocytosis may also occur in neoplastic diseases (leukemia, lymphoma), recovery from acute infectious diseases, and organ transplantation. 2, lymphocytopenia (lymphocytopenia) is mainly seen in the application of adrenocortical hormone, alkylating agents, anti-lymphocyte globulin and other treatments, as well as radiation damage, immunodeficiency disease, gamma globulin deficiency. Low results may be diseases: severe combined immunodeficiency, high pediatric measles may cause diseases: chickenpox, epidemic hemorrhagic fever, mumps, viral hepatitis Lymphopenia and disappearance of eosinophils indicate severe infection, severe disease, and poor prognosis. Inspection process 1. Collect 1 small drop of blood on one end of the slide, and use a pusher to tilt the 35~45° to push around and leave a proper amount of space to separate the thin blood of the head, body and tail. The length of the blood film is not less than 2.5 cm, and the remaining space to the other end of the slide is about 1 cm. The blood film is dried and stained. 2, Wright's Giemsa composite staining method: flat blood on the staining rack, add 3 to 5 drops of staining solution, immediately cover the blood film, add about 5 to 10 drops of buffer after about 30s, gently shake the slide Or gently blow the mixture to mix the dye solution with the buffer. After 5 to 10 minutes, rinse the dye solution with water and dry it for microscopic examination. 3, fast method: the rapid dyeing liquid A liquid, B liquid respectively in the appropriate size dyeing cylinder, the blood film first immersed in the liquid for 30s, washed, then immersed in the liquid for 30s, washed, after drying, microscopic examination. 4, microscopic examination: select the junction of the end of the blood film body, the red blood cells have not overlapped with oil mirror inspection, the inspection should have a certain direction up and down, and take into account the long edge of the long film diameter, otherwise affect the various types of cells The detection rate. Count 100 to 200 white blood cells, classify them according to their morphology, and find the percentage. Not suitable for the crowd 1. Patients who have taken thyroid hormones, steroid hormones, etc., may affect the results of the examination and prohibit patients who have recently taken the drug history. 2, special diseases: patients with hematopoietic function to reduce disease, such as leukemia, various anemia, myelodysplastic syndrome, etc., unless the examination is essential, try to draw less blood. Adverse reactions and risks Risk of infection: If you use an unclean needle, you may be at risk of infection.