What diseases can be detected through blood tests?

Nov 28, 2024 Source: Cainiu Health

Dr. Liu Feng

Introduction

A complete blood count (CBC) can be used for the initial diagnosis of diseases such as cystitis, anemia, hyperlipidemia, diabetes, and leukemia. If the test results indicate abnormalities in indicators such as white blood cells, red blood cells, platelets, neutrophils, blood glucose, or cholesterol, further examinations should be conducted under a doctor's guidance to enable timely treatment based on the underlying cause.

Generally speaking, a blood test refers to a routine blood test. A routine blood test can be used to diagnose whether one has diseases such as cystitis, anemia, hyperlipidemia, diabetes, leukemia, etc. If discomfort occurs, timely medical consultation is recommended. The specific analysis is as follows:

1. Cystitis

Cystitis is an inflammation caused by bacteria entering the bladder. Patients may experience symptoms such as frequent urination and urgency. During a routine blood test, it can be found that the total number of white blood cells in the blood significantly increases, accompanied by elevated neutrophils and increased C-reactive protein levels.

2. Anemia

Anemia may be related to long-term malnutrition or excessive blood loss, which causes reduced red blood cell production. Patients may experience symptoms like pale complexion and fatigue. A routine blood test can evaluate the condition based on changes in blood cells. If red blood cell count and hemoglobin concentration are found to be decreased, along with reduced mean corpuscular volume, further diagnosis is required.

3. Hyperlipidemia

Hyperlipidemia may be related to long-term unhealthy lifestyle habits, genetic factors, etc. If the condition worsens, it may affect cardiovascular health, causing symptoms such as chest tightness and shortness of breath. At this time, a routine blood test may indicate abnormal lipid levels, such as elevated cholesterol and triglycerides.

4. Diabetes

Diabetes is usually related to factors such as family heredity and high-sugar diets. These factors may affect insulin secretion, leading to reduced insulin production and causing symptoms such as excessive thirst, increased appetite, and frequent urination. A routine blood test for diabetic patients can monitor blood glucose levels and glycated hemoglobin values. If the results show fasting blood glucose ≥7.0 mmol/L, postprandial 2-hour blood glucose ≥11.1 mmol/L, or elevated glycated hemoglobin, diabetes can be preliminarily diagnosed.

5. Leukemia

Leukemia is a blood disorder typically associated with genetic factors and gene mutations. When bone marrow hematopoietic stem cells abnormally proliferate, symptoms such as fever, anemia, and bleeding may occur. A routine blood test may show abnormal increases or decreases in white blood cells, with corresponding decreases in red blood cells and platelets.

It should be noted that a routine blood test can only serve as a preliminary diagnosis tool for the aforementioned diseases. If abnormal results are detected, further diagnostic analysis should be conducted under a doctor's guidance, combining medical history, symptoms, and other tests to promptly identify the cause and provide targeted treatment.

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Is the complete blood count normal in patients with lymphoma?

In general, patients with lymphoma may exhibit different blood test results at various stages and during different treatments. Therefore, whether blood test results are normal needs to be determined based on specific circumstances. Regular blood tests should be performed routinely, especially during treatment when the testing frequency should be increased as directed by a physician, so that any abnormalities can be detected promptly. When white blood cell counts are low, patients should avoid crowded places.

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Can low immunity lead to leukemia?

In general, whether low immunity leads to leukemia needs to be determined based on the specific medical condition. If any discomfort occurs—such as recurrent infections or abnormal bleeding—it is advisable to seek timely medical attention for blood tests. In daily life, maintaining a regular sleep schedule and avoiding chronic sleep deprivation can help prevent immune system impairment. A balanced diet rich in high-quality protein and vitamins supports the maintenance of normal immune function.

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Can hemophilia be detected through blood tests?

In general, hemophilia can be diagnosed through blood tests. Targeted blood examinations can clarify abnormalities in coagulation function and help determine whether a person has hemophilia and the specific type. In addition, although genetic testing is not part of traditional routine blood tests, it is often performed alongside blood tests. By detecting mutations in relevant genes, genetic testing can identify the underlying genetic background.

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Does appendicitis require a blood test?

In general, whether blood tests are needed for appendicitis depends on the specific condition. Blood tests are usually required when appendicitis is suspected or confirmed. However, if the abdominal pain is mild and appendicitis is highly unlikely, blood tests may not be necessary. It is recommended to seek medical attention promptly so that a doctor can evaluate the situation and make appropriate decisions. Once appendicitis is diagnosed, follow the doctor's instructions for treatment and ensure adequate rest after surgery.