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Hepatitis A Antibody, IgG + IgM

Also referred as

Hepatitis A IgG/IgM

Hepatitis A Antibody testing

HAV IgM & IgG

Anti-HAV IgG/IgM test

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For men & women

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48 hours

Contains

2 tests

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The Hepatitis A Antibody, IgG + IgM test helps detect immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies in the blood against Hepatitis A virus (HAV). It helps diagnose current or acute infection (indicated by IgM) or past infection or vaccination, showing long-term immunity (indicated by IgG), helping in timely and effective management.

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Understanding Hepatitis A Antibody, IgG + IgM

Hepatitis A is a highly contagious viral infection caused by the hepatitis A virus (HAV). This infection is characterized by inflammation and other problems like enlargement of the liver and associated symptoms such as abdominal pain, loss of appetite, fatigue, nausea, vomiting, jaundice, etc.

The Hepatitis A Antibody, IgG + IgM test consists of two key components: the hepatitis A Virus IgG test and Hepatitis A Virus, IgM test. The IgG test detects immunoglobulin G antibodies, indicating past exposure to the virus or immunity from vaccination, and these antibodies can develop several weeks to months after infection, lasting for years. In contrast, the IgM test identifies immunoglobulin M antibodies, which signal a recent or active infection and typically appear within about two weeks of exposure, remaining in the blood for up to six months.

Doctors often recommend the Hepatitis A Antibody, IgG + IgM test based on an individual’s medical history, symptoms, risk factors, and physical examination findings. This test helps to evaluate a person's immunity status. It is also useful for diagnosing recent infections. In addition, it plays an important role in guiding vaccination decisions. This is particularly crucial for high-risk groups, such as travelers to areas where certain diseases are common or healthcare workers who may be exposed to infections.

This comprehensive assessment is vital for understanding an individual's risk for hepatitis A and determining appropriate preventive measures or medical interventions.

No special preparation is required for this test. Inform your doctor about all the medications or supplements that you are taking, as well as the history of recent vaccinations, as all these factors can influence the test results.

Lab test results may vary across 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 a proper understanding of the test results and appropriate follow-up care, which may include additional testing to monitor liver function and ensure recovery.

What does Hepatitis A Antibody, IgG + IgM measure?

Contains 2 tests

The Hepatitis A Antibody, IgG + IgM test measures immunoglobulin G (IgG) antibodies and immunoglobulin M (IgM) antibodies in the blood against hepatitis A virus. The IgG test assesses the presence of IgG antibodies, which indicate whether an individual has been previously infected with the hepatitis A virus (HAV) or has been vaccinated against it. A positive IgG result signifies long-term immunity, confirming past exposure or successful vaccination. On the other hand, the IgM test detects IgM antibodies, which are produced in response to a recent or active infection. The presence of IgM antibodies typically indicates that the individual has been exposed to HAV within the past few weeks, helping to diagnose acute hepatitis A. Together, these measurements provide essential insights into an individual’s immune response, allowing doctors to make informed decisions regarding treatment, vaccination, and other necessary health measures.

Hepatitis A Virus, IgM

The Hepatitis A Virus, IgM test is a qualitative assay that measures the presence of Immunoglobulin M (IgM) antibodies in the blood. These antibodies are produced by the immune system in response to an acute infection with the Hepatitis A virus (HAV). IgM antibodies are generated by the immune system within a few weeks of exposure. The presence of these antibodies indicates a recent or current infection, as IgM are the first antibodies that are produced in response to the HAV.

The Hepatitis A Virus, IgM test helps diagnose an acute Hepatitis A infection, especially in individuals exhibiting symptoms such as abdominal pain, loss of appetite, jaundice etc. Detecting IgM antibodies helps doctors confirm the diagnosis, differentiate it from other types of hepatitis ,and tailor appropriate treatment plans.

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FAQs related to Hepatitis A Antibody, IgG + IgM

What is the Hepatitis A Antibody, IgG + IgM test?

The Hepatitis A Antibody, IgG + IgM test measures the presence of two types of antibodies—Immunoglobulin G (IgG) and Immunoglobulin M (IgM) in the blood. This test helps determine if you have been previously infected with the hepatitis A virus (HAV), whether you have immunity due to vaccination, or if you are currently experiencing a recent infection.

Why do I need the Hepatitis A Antibody, IgG + IgM test?

You may need this test to confirm past exposure to HAV, diagnose a recent infection, assess your immunity status, or guide vaccination decisions, especially if you are at high risk due to travel or occupational exposure.

How is the test performed?

A phlebotomist (a trained professional to perform blood draws) will clean your skin using an antiseptic alcohol cotton swab or wipe and take blood samples from your vein using a needle. The blood sample will be stored safely and transported to the laboratory for analysis.

What do the results mean?

A positive IgG test indicates past infection or immunity from vaccination, suggesting long-term protection. On the other hand, a positive IgM test indicates a recent or current infection with HAV, typically showing that you may be experiencing acute hepatitis A. Negative results for both IgG and IgM suggest that you have not been exposed to HAV and are not immune.

Is there any preparation required for the test?

No special preparation is necessary; however, it's advisable to inform your healthcare provider about any medications, supplements, or recent vaccinations, as these may affect test results.

Can I have this test if I have symptoms of hepatitis A?

Yes, this test is often recommended for individuals experiencing symptoms suggestive of hepatitis A, such as jaundice, abdominal pain, or fatigue, to help confirm the diagnosis.

How often should I be tested for hepatitis A?

The frequency of testing depends on your risk factors, medical history, and any recent exposures. Discuss your situation with your healthcare provider to determine the appropriate testing schedule.

Is there a vaccine for hepatitis A?

Yes, there is an effective vaccine that provides long-term immunity against hepatitis A. If you are at risk or have not been vaccinated, your healthcare provider can advise you on vaccination options.

Can I get hepatitis A if I have positive IgG antibodies?

Generally, if you have positive IgG antibodies, it indicates that you have immunity to hepatitis A, either from past infection or vaccination. However, if you have a positive IgM test, it suggests a current infection.

What are the key differences between IgG and IgM in the context of hepatitis A testing?

IgG antibodies indicate long-term immunity, suggesting either past infection or successful vaccination. In contrast, IgM antibodies indicate a recent infection, as they are the first antibodies produced in response to hepatitis A. A positive IgM result typically means you are currently infected, while a positive IgG result signifies that you have immunity.

How long do IgG and IgM antibodies remain in the body?

IgM antibodies generally appear within two weeks of infection and may remain for up to six months. IgG antibodies, on the other hand, can persist for years, often for life, indicating long-term immunity.

Can a person have both IgG and IgM antibodies at the same time?

Yes, it is possible to have both IgG and IgM antibodies present simultaneously. This scenario usually indicates that the person is in the later stages of an acute infection and has developed some level of immunity.

How does Tata 1mg ensure accurate lab test results?

Tata 1mg ensures accurate lab test results through certified laboratories that use advanced technology and adhere to stringent quality control measures. This commitment to high standards guarantees reliable results.

Content created by

Dr. Swati Gupta (Anand)

MBBS, MD Lab Medicine

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Last Updated

7th Nov 2025