Hepatitis A (HAV) antibody test
Quick answer: This blood test looks for antibodies against hepatitis A virus. IgM shows a recent infection and IgG shows past infection or vaccination. Doctors order IgM when you have jaundice or signs of acute hepatitis, and IgG to check immunity before vaccination.
- SampleBlood
- TakesAbout 5 minutes
- Before the testNo special preparation is usually needed.
How the test is done
- 1A nurse confirms whether IgM or IgG is requested
- 2A vein in your arm is cleaned
- 3A needle collects a tube of blood
- 4The lab tests for hepatitis A antibodies
What your results can mean
Reading your report
A positive IgM usually suggests a recent or current infection and a positive IgG a past infection or immunity, but your doctor will read the result alongside your symptoms.
If the result is outside the usual range
A positive IgM can point to a recent hepatitis A infection, often after contaminated food or water. A positive IgG usually shows past infection or vaccination and lifelong protection.
Who usually has this test
Children and adults with jaundice, nausea or dark urine, and people checking immunity before travel or vaccination.
Risks and aftercare
No special aftercare; if you have hepatitis A, careful hand washing helps protect others at home.
Names and options
Also called: HAV IgM, HAV IgG, anti-HAV, hepatitis A test
Options
- IgG
- Antibody
- IgM (ELISA)
Listed by the hospital as
- HAV IGG ANTIBODY
- HAV ANTIBODY
- HAV IGM ANTIBODY ELISA
Questions about this test
How does hepatitis A spread?
It spreads through food or water contaminated with stool from an infected person. Good hand washing and safe drinking water lower the risk.
Does hepatitis A become long term?
No. Hepatitis A does not cause long-term infection. Most people recover fully, though adults can feel unwell for weeks.
Is hepatitis A vaccine safe before pregnancy?
Hepatitis A vaccine is an inactivated vaccine. Your doctor can advise whether you need it before trying to conceive.
Related tests
Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
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This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.