3-year-old baby's blood test WBC high bacterial infection

We all know that many babies are prone to illness when they are young, so many mothers will regularly test their babies' blood routine according to their growth conditions. Blood routine can detect many substances that are lacking in the baby's body.

An increase in the total white blood cell count is usually related to bacterial infection. In this case, further investigation should be done to find the specific infection lesions and identify the type of infecting bacteria before treatment. Only in this way can the increase in white blood cell count be controlled.

Q: When is the most accurate time to do a routine blood test?

A: Taking blood to check white blood cells and their cell classification is the most accurate and fastest way to determine the cause of infection. Acute high fever is usually caused by infection, but it is difficult to determine the nature of the infection by blood tests within 24 hours of fever. Sometimes, if a child's blood is checked just a few hours after having a fever, it is not easy to detect an increase in white blood cells. An increase in white blood cells is the body's response to bacterial invasion. Well, since it is a "reaction" it naturally takes a certain amount of time to be noticed. This "perception" usually refers to the white blood cell count exceeding 10×109/L (the normal value of white blood cells is 4 to 10×109/L). Since everyone's normal baseline of white blood cells is different, only when the white blood cell count exceeds

10×109/L is required to reach the consensus “perception” level. The time it takes for each person's white blood cell to reach this level is different, so checking the white blood cell count at least 24 hours after infection (generally after a fever) is helpful in determining whether it is a viral or bacterial infection.

A: Generally, children should be kept still before blood collection and avoid strenuous exercise such as running and jumping. After intense exercise, you should rest for 15-20 minutes before drawing blood. In addition, when the weather is cold, you should pay attention to keeping warm to ensure smooth blood circulation in the extremities, which is also conducive to blood collection.

Q: If the total white blood cell count increases on the test results, should antibiotics be used for the child?

A: The white blood cell count alone is not accurate enough. When checking the white blood cell count, the white blood cells must be classified.

Q: Do all the items marked with arrows on the test report indicate that they are exceeding the standard?

A: The normal values ​​for children are different from those for adults. Children are constantly growing and developing, and the normal values ​​at each stage are different from those of adults. On the routine blood test report, all reference values ​​are standard reference values ​​for adults. Therefore, it seems to parents that many indicators are not within the reference values. Currently, hospital test reports all use normal values ​​for adults as the standard, and many pediatricians also use this standard value to judge children of different ages. This is a big misunderstanding.

What should we pay attention to after getting the blood test report?