I believe many mothers have this experience: What is the use of this examination? ? Alas, I don’t know. If the doctor says to do it, go and line up quickly! I have to quickly reduce the child\’s fever when I get back! I came back from the blood routine and was still confused… If you have had the above experience, come and take a look! What is a routine blood test? Routine blood test is the most common clinical examination, which includes white blood cell (WBC) classification and value, red blood cell (RBC), platelet (PLT) value, hemoglobin (HGB) concentration measurement, hematocrit (HCT) and other parameters. Routine blood tests can detect early signs of many diseases, such as anemia and thrombocytopenia. It is an important basis for judging the cause of the child\’s illness (caused by bacteria? caused by viruses?). How to read the blood routine report? When looking at the blood routine report, we mainly look at several indicators: 1. Hemoglobin 2. Platelets 3. White blood cells If white blood cells and neutrophils increase, the baby may be infected by bacteria. If the white blood cell level does not change or decreases, and lymphocytes increase, the baby may have a viral infection, and antibiotics are not needed. (\”↑\” or \”H\” indicates that the result is higher than the reference value; \”↓\” or \”L\” indicates that the result is lower than the reference value.) *This method is not applicable every time. The specific situation still depends on the child\’s symptoms. 4. Do I need to do blood routine for CRP? The child is sick, which is already hard work, and he has to prick his finger. The parents feel really distressed when they see it. How about we stop doing this routine blood test? Whether you need to do a blood routine or not, you will know by looking at this table: The age of the baby, the illness status should (√) OR not (×) Newborn fever √ Non-newborns with symptoms of serious diseases √ No symptoms of serious diseases between 1 and 3 months old √ No serious disease symptoms for more than 3 months ×*Here × represents an unconventional recommendation, which does not mean that it is not necessary at all. It depends on the situation.