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Clinical Significance Of Several Important Values In Blood Routine Examination

2025-10-23


When we go to the hospital for treatment, in order to help doctors better diagnose diseases, we will do various tests, big and small. The most common one is the blood routine test, and the diagnosis of many diseases cannot be separated from the blood routine report. Among them, there are several values in the blood routine report that are very important and directly reflect our physical condition and the degree of disease. Let's take a look below.

Several important values in the blood routine report and their clinical significance:

1. Hemoglobin (Hb)

Hemoglobin and red blood cells are lower than normal values, indicating anemia. The lower the value, the more severe the anemia. Usually, there is no problem with hemoglobin levels exceeding 90g/L; Blood transfusion is required when the concentration is less than 60g/L; If the hemoglobin is less than 70g/L and accompanied by underlying diseases, especially heart disease, timely blood transfusion is also necessary to avoid worsening of underlying diseases; When hemoglobin levels are between 70g/L and 90g/L, follow the doctor's guidance to supplement with vitamin B and iron supplements, or use traditional Chinese medicine for blood supplementation. But this does not mean that the higher the hemoglobin, the better. If the hemoglobin exceeds 240g/L, one should be alert to polycythemia vera.

2. Absolute values of white blood cells and neutrophils

White blood cells are immune cells in the body that can timely recognize and eliminate invading viruses and bacteria, and also have anti-cancer effects. White blood cells are divided into various types, such as neutrophils and monocytes, as well as lymphocytes, basophils, and eosinophils, among which neutrophils are more important. When looking at a blood routine, priority is given to the absolute values of neutrophils and white blood cells. Usually, receiving radiotherapy, chemotherapy, or taking targeted drugs with heavy bone marrow suppression can lead to a decrease in absolute values. This type of blood cell can play a role in preventing infections in the body. If the absolute value decreases, it will inevitably lower the immune system. White blood cells can be protected by administering white blood injections.

Under normal circumstances, the white blood cell count is (4-10) × 10 ^ 9/L. If the white blood cell count is too low, it is susceptible to infection and can worsen the condition. Therefore, the white blood cell count should be greater than 3 × 10 ^ 9/L, and the absolute value should exceed 1.5 × 10 ^ 9/L. If the absolute value is higher than the standard value, it indicates that there is an infection in the body; The intake of hormones can also increase the absolute value. If this value is too high, be alert to leukemia.

3. Platelets

Neutrophils and white blood cells have anti infective abilities, hemoglobin and red blood cells transport oxygen to the body, and platelets can stop bleeding. A low platelet count is prone to bleeding, while a high platelet count can lead to the formation of blood clots. Under normal circumstances, platelets are between (100-300) × 10 ^ 9/L. If the platelet count is slightly higher than 75 × 10 ^ 9/L, there is no need to worry too much; If it is below 50 × 10 ^ 9/L, a platelet boosting needle should be administered; Platelet transfusion is required if the platelet count is below 20 × 10 ^ 9/L. If the platelet count is too low, once internal bleeding such as cerebral hemorrhage, pulmonary hemorrhage, or gastrointestinal bleeding occurs, it can pose a threat to life due to excessive blood flow. Platelets are considered safe within the range of (400~500) × 10 ^ 9/L. If they exceed 500 × 10 ^ 9/L, attention should be paid to thrombosis, especially cardiovascular thrombosis and cerebral thrombosis.

Finally, I would like to remind everyone to pay attention to the following matters when conducting a blood routine test:

1. Within 24 hours before the blood test, it is best to control diet and avoid consuming too much high-fat and high protein food. At the same time, avoid drinking alcohol, as alcohol entering the bloodstream can have a certain impact on the test results.

2. It is best to fast after 12 pm the night before the examination, maintain an empty stomach, and drink a small amount of water if necessary to avoid affecting the examination results.

3. Provide psychological counseling in advance and overcome fear when drawing blood. A tense state can cause blood vessels to contract rapidly, making it difficult for medical staff to draw blood.

4. After blood collection, press the wound with a disinfectant cotton swab to avoid bleeding. Do not rub the needle hole area in the short term to avoid hematoma formation.

If there is dizziness, it is best for the examinee to lie down immediately, drink some glucose water, and wait until the symptoms improve before continuing to complete the examination items.