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About the test
What is this test done for?
The hepatitis A (HAV) virus IgG test is done to diagnose liver infection due to hepatitis A virus.
Why is it Done?
It is done to diagnose the cause of hepatitis as a part of viral hepatitis panel. It also helps in identifying the type of hepatitis virus causing the infection. Sometimes, it is used to evaluate the need of hepatitis A vaccine.
When should it be performed?
This test is done when a person shows the following symptoms: • Fever • Fatigue • Malaise • Loss of appetite • Nausea, vomiting • Abdominal pain • Dark colored urine • Pale stools • Joint pain • Yellowness of skin (jaundice) • Children having fever and diarrhea
How is it done
A blood sample will be collected from a vein in your arm. For doing HAV IgG, it is preferred to be 8 hours fasting prior to collection.
The test is done usually in collaboration with Hepatitis A IgM. If it is positive: it suggests no active infection, but the patient has had a pervious exposure to HAV or has been vaccinated for HAV. If it is negative: it suggests no exposure to HAV in the past, but acute or recent infection cannot be ruled out.
Other Tests
HAV IgM test will give us the diagnosis of recent or acute infection in the person. A complete blood count (CBC) should also be done in case of fevers to rule out other diagnosis.
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