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Dengue Antibody, IgM

Also referred as

Anti Dengue IgM

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A Dengue Antibody, IgM test helps to detect the presence of dengue-specific Immunoglobulin M (IgM) produced by the body in response to dengue virus. It helps in the early detection of dengue fever, often within the first few days of symptoms.

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Understanding Dengue Antibody, IgM

Dengue fever is a viral infection transmitted through mosquito bites, primarily by the Aedes aegypti mosquito carrying the dengue virus. According to the World Health Organization (WHO), dengue fever is a significant health concern widespread in tropical and subtropical regions around the world. The symptoms of dengue fever can vary widely, ranging from mild-flu-like symptoms such as fever, headache, and body ache to more severe manifestations like bleeding, abdominal pain, or Dengue Hemorrhagic fever (DHF) which is life-threatening if not treated promptly.

A Dengue Antibody, IgM test is most effective when conducted during the acute phase of infection i.e. starting 4-5 days after onset of symptoms and is reliably detectable for approximately 12 weeks, offering a crucial time window to identify the presence of dengue-specific IgM antibodies in the blood. While there is no specific antiviral treatment available, timely diagnosis not only helps confirm the infection but allows for prompt treatment to reduce the risk of complications associated with dengue fever.

A Dengue Antibody, IgM test plays an important role in the diagnostic process of dengue fever. No special preparations are required to get tested with a Dengue Antibody, IgM test. Lab test results may vary across different laboratories. Abnormal test results require an expert interpretation, therefore, never try to self-medicate at home based solely on these results, and always consult a doctor for proper understanding of the test results. Discuss your symptoms and medical history to help the doctor correlate your clinical and laboratory findings and tailor a treatment plan.

Understanding the spectrum of dengue fever is essential. Recovery from one serotype of the dengue virus grants lifelong immunity against that specific strain. However, it is noteworthy that you remain susceptible to other types of dengue viruses. Another infection, especially with a different serotype, can be more severe and dangerous. Therefore, taking every possible precaution to prevent subsequent attacks of dengue virus should be a priority in safeguarding your health.

What does Dengue Antibody, IgM measure?

A Dengue Antibody, IgM test measures the presence of Immunoglobulin M (IgM) antibodies in the blood. It specifically detects the dengue-specific IgM antibodies produced by the body in response to the dengue virus. When a dengue infection occurs, IgM antibodies are the first line of defense. It helps identify recent dengue virus infection as the production of IgM antibodies typically occurs within the first few days to a couple of weeks after the onset of the symptoms.

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FAQs related to Dengue Antibody, IgM

Why is the Dengue Antibody, IgM test done?

The Dengue Antibody, IgM is primarily done to confirm recent exposure to dengue virus, helping in the diagnosis of dengue fever, especially during the acute phase of the illness. This test helps identify dengue-specific IgM antibodies offering a crucial window for the early detection of dengue fever within the first few days of symptoms onset.

Why do I need a Dengue Antibody, IgM test?

The doctor may recommend a Dengue Antibody, IgM test if you are suffering from high fever and other flu-like symptoms associated with dengue. It is typically suggested during the monsoon season and outbreaks when dengue is common. If you have dengue, the doctor may order a complete blood count (CBC) test along with it.

What does a positive Dengue Antibody, IgM test indicate?

A positive Dengue Antibody, IgM test indicates the presence of dengue-specific IgM antibodies in the blood produced by the body in response to the dengue virus infection. A positive result signifies recent exposure to the virus suggestive of a recent dengue virus infection.

What are the most common symptoms of dengue fever?

The most common symptoms of dengue fever include high fever, severe headache, body aches, muscle and joint pain, pain behind the eyes, fatigue, nausea, rash, and swollen glands.

Is it possible to have dengue without showing any noticeable symptoms?

Yes, dengue infection can be asymptomatic, especially during the first exposure (primary infection). In some cases, individuals may experience mild symptoms that are often confused with the flu or another viral infection.

How many days does dengue fever last?

Dengue fever can typically last from 2 to 7 days after a mosquito bite but the duration can vary for each individual. If you suspect dengue fever, consult your doctor for a proper evaluation of your condition.

What is dengue hemorrhagic fever (DHF)?

Dengue hemorrhagic fever (DHF) is a severe and potentially life-threatening complication of dengue fever. It is characterized by intense fever, bleeding, and a rapid drop in platelet count. DHF can lead to severe complications and requires immediate medical care.

How many platelets are normal in dengue?

During the illness, platelet levels might drop temporarily. Your doctor will monitor your platelet count to ensure it stays within the normal range for your recovery.

How can I prevent dengue infection?

Adopting some proactive measures may help prevent dengue infection such as eliminating mosquito breeding sites, using mosquito repellents, wearing full-sleeve clothing, using mosquito nets, and clearing water containers regularly to prevent mosquito breeding.

Is dengue fever contagious?

No, dengue fever is not contagious. It cannot spread directly from person to person. However, the dengue virus spreads through the bite of infected mosquitoes.

Content created by

Dr. Swati Gupta (Anand)

MBBS, MD Lab Medicine

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Last Updated

14th Oct 2025