What does a routine blood test check?

Many people come to the hospital, and the doctor asks us to do a routine blood test without saying anything. However, many people do not understand what diseases the routine blood test is for. In medicine, there are many diseases that require routine blood tests. Routine blood tests are also a systemic disease test, such as hepatitis, hepatitis A, hepatitis B, cirrhosis, and some sexually transmitted diseases. So what is a routine blood test?

Red blood cell test (RBC)

Normal value: male (4.0～5.5)×10*12/L; female (3.5～5.0)×10*12/L; newborn (6.0～7.0)×10*12/L

Clinical significance: Erythropenia during routine blood examination is common in various anemias and anemia caused by diseases. Increased erythrocytosis is common in hemoconcentration, polycythemia vera, hypoxia, etc.

White blood cell test (WBC)

Normal value: Adult (4.0～10.0)×10*9/L Newborn (15.0～20.0)×10*9/L

Clinical significance: During a routine blood test, most patients have an increase in white blood cells, so when the white blood cells are normal, there is usually a disease. Such as various inflammations, burns, malaria, typhoid, viral infections, etc.

What does a blood test check?

Hemoglobin (Hb)

Normal value: Male 120-160 g/L Female 110-150 g/L Newborn 170-200 g/L

Clinical significance: The degree of anemia can be determined based on the degree of HB reduction during blood routine examination.

Platelet count (PLT)

Normal value: (100～300)×10*9/L Reticulocyte count: 0.5%-1.5%

Clinical significance: The main function of platelets is to stop bleeding. Diseases are diagnosed based on the number of platelets. Common diseases include: thrombocythemia, acute infection, hemolysis, fracture, thrombocytopenic purpura, hypersplenism, uremia, etc.

Bleeding time (BT)

Normal value: Paper disc method (1-5min)

Clinical significance: The length of bleeding time during a routine blood test can be used to determine diseases such as thrombocytopenia, platelet function deficiency, acute leukemia, scurvy, etc.

Routine blood tests are used to check for these diseases. After you have identified the type of disease through routine blood tests, the effect of symptomatic treatment will be more prominent. When doing routine blood tests, you must also remember to collect blood reasonably. It depends on whether the doctor collects venous blood or thumb blood. Each part is different, and the test results of the collected blood are also different.