68. Why do we get our blood test done?
By analyzing a blood sample, much can be known about the body.
Our blood consists of many elements which must be in certain
quantities and have a particular appearance. Any change in these
elements can tell us what is happening in the body.
For instance, a high number of white corpuscles is a sign of infection
because these cells fight off any attack by germs. A blood test can
reveal the composition of blood including the presence of bacteria or
virus. Blood tests are important to let the doctor diagnose what a
person is suffering from.
Vì sao chúng ta phải xét nghiệm máu?
Bằng cách phân tích một mẫu máu, ta có thể biết được
nhiều điều về cơ thể. Máu của chúng ta gồm nhiều
