Blood test is a test method to detect various blood cells in the blood and various components in the plasma by taking arterial blood, venous blood or peripheral blood from human body to understand the health condition of human body and to diagnose diseases. The content of blood examination: blood clinical basic examination, including blood routine, blood sedimentation, blood type, etc. Blood biochemical examination, including liver and kidney function, blood sugar, lipids, electrolytes, cardiac enzymes, bone metabolism, amylase, endocrine hormones, etc. Blood immunological examination, including various infectious diseases, autoimmune diseases, immunodeficiency diseases, immunoproliferative diseases, tumor markers, etc. Blood microbiology examination, including blood bacteriology culture and identification. Blood cytology examination, including blood smear, bone marrow film, clotting time examination, etc. Blood parasite examination, including examination of Plasmodium and Haemosiderosis, etc.