Blood tests are one of the most common and important health check-up methods today. Through the analysis of blood samples, doctors can assess overall health, detect diseases early, and monitor the effectiveness of treatment.
In this article, you will understand what a blood test is, what it includes, how much it costs, and how to read blood test results in the easiest way possible.

What is a blood test?
A blood test involves taking a small amount of blood from the body (usually from a vein in the arm) for analysis in a laboratory. The results will provide information about:
- Quantity and quality of blood cells
- Liver and kidney function
- Blood sugar and fat levels
- Signs of inflammation and infection
This is a basic test, but it is extremely valuable in screening and diagnosing diseases early.
What does a general blood test include?
A general blood test typically includes several different items, the most common of which are:
1. Complete Blood Count (CBC)
A complete blood count helps measure:
- Red blood cells (RBCs)
- White blood cells (WBC)
- Platelets (PLT)
This is a crucial part of detecting anemia, infections, or blood disorders.
2. Blood sugar (Glucose)
- Assessing the risk of diabetes
- Monitoring diabetes
3. Blood lipids
- Cholesterol
- Triglyceride
Helps assess cardiovascular risk.
4. Chức năng gan, thận
- Men gan (AST, ALT)
- Creatinin
Phát hiện sớm bệnh gan và suy thận.
Công thức máu là gì?
A complete blood count (CBC) is part of a blood test used to analyze the cellular components of the blood.
Một số chỉ số quan trọng:
- Red blood cells (RBCs): transport oxygen.
- White blood cells (WBCs): fight infection
- Platelets (PLT): help with blood clotting.
When these indicators are abnormal, the body may be experiencing immune problems, anemia, or an infection.
What do blood test results tell us?
Blood test results help doctors understand the body’s condition:
- High/low readings can be a warning sign of illness.
- Compare to the “normal” (reference range)
- A holistic assessment is needed; one should not jump to conclusions.
Note: Do not self-diagnose based on a single indicator. Consult a doctor for an accurate diagnosis.
How much does a blood test cost?
The cost of blood tests depends on the type of test and the medical facility:
- Basic tests: ~100,000 – 300,000 VND
- General check-up: ~500,000 – 2,000,000 VND
- Intensive package: may cost more
If you choose the home sample collection service, the cost may increase, but it’s more convenient.
When should I get a blood test?
You should have a blood test in the following cases:
- Regular health check-ups
- Symptoms include fatigue and dizziness.
- Monitoring for medical conditions (diabetes, liver, kidney)
- Before surgery or treatment
It’s best to have a check-up every 6–12 months to monitor your health.
Things to note before a blood test.
For accurate results, please note:
- Fasting for 8–12 hours may be required (depending on the test).
- Do not drink alcohol before the test.
- Inform your doctor about any medications you are currently taking.
- Get enough rest.
In conclusion
Blood tests are an important tool for comprehensive health checks and early detection of many dangerous diseases. Understanding blood test results, complete blood count (CBC), and costs will help you be more proactive in your healthcare.
Don’t wait until you’re sick to get checked – get regular tests to protect your health and your family’s health.




