Meaning of blood lactate test

The blood lactate test is one of the highly rated tests in the monitoring and diagnosis of many diseases, especially for emergency resuscitation patients.

1. What is a blood lactate test?

The blood lactate test is a test conducted to measure the amount of lactate in the patient's blood, in rare cases in the cerebral fluid.

Lactate is a product created during cellular transformation. Sometimes lactate may appear as lactic acid depending on the pH. However, the human body has a neutral pH so often appears in the blood in the form of lactate.

In normal humans, lactate levels in the blood and in the cerebral fluid are usually low. Only if the cells do not have enough oxygen or when the energy production path in the cells is broken, then red blood cells, muscle cells, brain and other tissues will produce excess lactate levels.

When a person's body develops a significant increase in blood lactic acid levels (or increased lactate) may progress to lactic acidosis. Severe lactic acidosis can lead to a balanced breakdown of acids and bazo, causing symptoms such as nausea, vomiting, sweating, even coma.

Blood grabbing

Blood lactate test

Therefore, doing a blood lactate test can help control the increase in lactate in the blood and take timely interventions.

2. Causes of increased blood lactate

There are many causes of increased blood lactate, however based on the mechanism that causes lactic acidosis can divide these causes into 2 main groups.

The most common is type A lactic acidosis due to insufficient oxygen absorption or decreased tissue perfusation due to reduced blood flow, e.g.

  • Heart
  • Bacterial infections, condocular heart failure
  • Lung disease or severe respiratory failure
  • Pulmonary edema
  • Severe anemia
  • Shock caused by extreme blood loss or injury

Chest pain

Heart attack can be the cause of blood lactate increase

The second group is lactic acidosis type B, which is caused by an excess of oxygen demand or metabolic-related problems:

  • Liver and kidney diseases
  • Uns controlled diabetes
  • Glycogen reserve disease (such as glucose-6-phosphatase deficiency)
  • Leukemia
  • AIDS
  • Some series of drugs or poisons such as cyanide, methyl, salicylat,…
  • Heredous diseases and heredity medosm dyspomous diseases such as myoshythmous dyspomrodation
  • Intense exercise as athletes

3. Blood lactate test in dinh

Most often, the patient is prescribed a blood lactate test if one of the following symptoms appears:

  • Shortness of breath or rapid breathing
  • Nausea
  • Pale, pale body
  • Sweating a lot
  • Abdominal pain of unknown causes
  • Muscle weakness
  • Person in a coma
  • Suspected cases are sepsis, heart attack, severe consed heart failure, renal failure, or untenable diabetes.


Symptoms of nausea appear

Initially, in order to generally assess the condition of each person, a blood lactate test will be in order to conduct in combination with several other tests. In case of significant increase, the blood lactate test will be repeated for a certain period of time to monitor the condition.

4. What diseases does a blood lactate test help diagnose?

Blood lactate testing is of high value in the diagnosis of infectious infections:

  • Hyperlactatemia: the concentration of lactic acid in the blood increases but there has not been a transformation of blood pH.
  • Lactic acidosis (hyperlactacidémie): increased levels of lactic acid in the blood (over 7mmol/L) in combination with reduced blood pH.

In addition, blood lactate testing is also useful in finding and identifying the causes of metabolic acidosis and increasing anionic voids:

  • Second lactic acidosis (lactic acidosis type A due to hypoxia): shock conditions caused by infection, cardiac or volume reduction,…
  • Acute lactic acidosis (lactic typ B acidosis is not accompanied by tissue hypoxia): suggests hepatic impairment, chronic renal failure, poisoning of substances such as ethanol, salicylate or congenital enzyme deficiency.

In particular, blood lactate testing is used extensively in emergency resuscitation as a pred factor. When the concentration of lactate in the blood is higher than 30mmol/L, it can be said that the risk of death is inevitable.


Blood lactate testing should be performed at a reputable medical facility

5. Meaning of blood lactate test

Blood lactate test results are considered normal if the lactate/plasma TM value is between 5 – 15 mg/dL.

Where the blood lactate value is high, it means that the person's body is creating accumulated lactate. In other words, the higher the lactate level, the more serious the condition. In particular, if lactate increases accompanied by hypoxia can be a sign of dysfunction of the muscles.

However, lactate excess is usually not of diagnostic value because it does not help determine the cause of this increase, but is only the basis for the doctor to be able to exclude or confirm the reason for the existing symptoms of the person. In order to find the cause and diagnose the disease, the doctor will need to have a physical examination, a combination of the medical history and the results of other diagnostic tests.

Some drugs can increase the concentration of lactic acid in the blood. Therefore, the patient should inform the doctor if alcohol, sodium bicarbonate, adrenalin or glucose is used.

Share99 International Health Hub is one of the hospitals that not only ensures professional quality with a team of leading doctors, modern technology equipment system but also stands out for comprehensive and professional medical examination, consultation and treatment services; civilized, polite, safe and sterilized medical examination and treatment space. Customers who choose to perform tests here can be assured of the accuracy of the test results.

Customers can directly go to Share99 Health System nationwide for examination or contact the hotline here for assistance.


  • Functions of cerebral fluid
  • Learn about fissive heart failure
  • Lactic acid acidosis during the treatment of diabetes mellitus


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About: Minh Quynh

b1ffdb54307529964874ff53a5c5de33?s=90&d=identicon&r=gI am the author of I had been working in Vinmec International General Hospital for over 10 years. I dedicate my passion on every post in this site.


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