There are many reasons for choosing several test tubes, the most important of which is to classify and detect different components in blood. Because of the complexity of blood components, classifying and determining the contents of different substances can not only simplify the detection operation, but also make the detection results more accurate. Doctors often choose different covers and labels to distinguish different blood tests; Secondly, it is also used as backup blood. In order to prevent mistakes, such as blood pollution, unused blood can be reused.
Proper blood donation will make people healthier, accelerate the production of blood cells and promote blood metabolism. Blood donation can not only promote positive energy and convey love, but also have many benefits to your body. When the blood is pumped out, the hematopoietic cells in the body will participate in the hematopoietic work, and more hematopoietic cells will be mobilized to participate. Compared with not donating blood, the body will be more energetic and full of vitality. Of course, this is normal. When the amount of blood pumped out is greater than the body can bear, the body will be weak and syncope will occur. Compared with normal people, generally donating 200cc blood will not cause any physical abnormalities. Of course, according to personal circumstances, those with good physical fitness can choose to donate more.
Although there is still a certain gap between the blood volume of blood test and the blood volume of blood donation, the blood volume of blood test is very small, so it will not cause any harm to the body, but will also be beneficial to health and accelerate blood circulation.