Hong Kong [email protected]
HealthLink

Expert Medical Knowledge
Sharing trusted health information

Popular Science Tips On Blood Routine Testing

2026-2-14


Blood routine examination is a common and universal laboratory test, which is one of the auxiliary examinations required by doctors to diagnose diseases. There are often some English abbreviations or numbers on the test report, which can be confusing. Mr. Chen's spouse often has a cold and fever, and has been doing blood routine tests in recent years. However, Mr. Chen doesn't know why the hospital always conducts blood routine tests and can't find specific problems, so he is a bit impatient. So, what is the purpose of a blood routine test and what diseases can it detect? Now, let me introduce some common knowledge related to blood routine testing.

1. Understand blood routine and its uses

1.1 What is blood routine

Blood routine is a laboratory test method that comprehensively tests the actual number and morphological changes of blood cells, in order to understand the basic situation of the body.

1.2 The purpose of blood routine

① To determine the condition, doctors will combine the test results to understand the relationship between the patient's blood and internal tissues, grasp the patient's condition, and provide accurate basis for diagnosis.

② Auxiliary function: Doctors analyze hidden risks based on the number of cells in the test results, choose the correct treatment method, consider the necessity of blood transfusion, and also clarify the severity of the patient's condition to assist in the development of treatment plans.

③ Scheme adjustment, blood routine test results will display the treatment effect of the patient at a certain stage. Doctors will adjust the treatment plan in a timely manner based on the recovery situation, enhancing the pertinence and feasibility of the treatment.

What diseases can be detected by blood routine examination?

2.1 Infection

Under the premise of a cold and fever, a blood routine test can detect the patient's lymphocytes, neutrophils, and other conditions, determine whether it is a bacterial or viral infection, and thus use medication correctly to avoid unreasonable use of antibiotics.

2.2 Anemia

Blood routine examination can help doctors understand the patient's hemoglobin level. If it is lower than the standard value, it indicates anemia and provides powerful assistance for disease diagnosis and treatment plan formulation. In addition, blood routine testing can also effectively prevent the occurrence of thalassemia.

2.3 Whether leukemia patients suffer from leukemia

Although leukemia patients do not have obvious symptoms in the early stages, abnormalities can be detected through blood routine testing. For example, abnormal white blood cell count indicators and problems with platelet count indicators. Doctors will make final judgments based on the patient's medical history, symptoms, condition, and other auxiliary examinations to ensure accurate diagnosis results.

What are the important indicators of blood routine examination?

3.1 White blood cells

The absolute value of neutrophil rod-shaped nuclei is (0.04-0.5) 10 ^ 9/L, the absolute value of eosinophils is (0.05-0.5) x10 ^ 9/L, the absolute value of lymphocytes is (0.8-4) x10 ^ 9/L, and the content of white blood cells is (4.0-10.0) x10 ^ 9/L.

3.2 Red blood cells

Under normal circumstances, the normal value for males is 4.0-5.5X10 ^ 12/L, and for females it is 3.5-5.0X10 ^ 12/L.

3.3 Hemoglobin

The normal value for males is 130-175g/L, for females it is 115-150g/L, and for newborns it is 170-200g/L. Its value can directly reflect whether the patient is anemic.

3.4 Platelets

Normally, the normal value for adult platelets is (1-3) x10 ^ 11/L. If the value increases, be alert to myeloproliferative diseases. If it decreases, pay attention to acute leukemia or aplastic anemia.

4 Precautions for conducting a blood routine test

① Before conducting a blood routine test, avoid overeating.

② After bathing, blood routine testing should not be performed immediately.

So, whether it's after a full meal or a bath, direct testing can result in false positives or false negatives, which can affect the test results.

Now that we know the purpose and important indicators of blood routine, we also understand that the seemingly simple blood routine is a "big question" to implement! So, we need to actively cooperate with doctors to complete blood routine tests.