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Anti HBs Antibody Test - HbsAg

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Anti HBsAg Test Overview

Hepatitis B surface antibody test (HBsAb) detects antibodies against hepatitis B virus (HBV). The Anti HBsAg test is used to determine past exposure & status of adequate immunity in vaccinated individuals

The Anti HbsAg Antibody test is used to identify an individual's level of immunity against Hepatitis B as part of the screening and evaluation to prevent and control Hepatitis B infection.

It helps detect the Hepatitis B surface antibody (anti-HBs) in a person's plasma sample to confirm if a person is vaccinated or infected with the virus.

This test also helps assess the acquired immunity against the disease. Sufficient anti-HbsAg antibodies indicate that a person has been infected with and recovered from the disease or has been vaccinated against HBV, essential for high-risk groups such as healthcare workers and pregnant women.

Who should do an Anti HbsAg Antibody test?

People who should consider taking an Anti HbsAg Antibody test include -

  • Individuals with a family history of liver disease
  • Healthcare workers
  • Pregnant women
  • People who have recently traveled abroad
  • Individuals with a weakened immune system
  • People who use injection drugs

For health professionals, an Anti-HbsAg Antibody test can provide the following important information:

  • Determine HBV exposure.
  • Differentiate between individuals exposed and those who have eliminated the pathogen.
  • Find recent HBV viral exposures.
  • Find HBV-immune persons
  • Evaluate HBV therapies.
  • Identify acute and chronic HBV infections
  • Help manage HBV infection
  • Prenatal HBV testing for pregnant women

Written by: Dr Pooja Trehan, M.D Pathology, Dept. of Heamatology

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Anti HBs Antibody Test - HbsAg Price

Metropolis Healthcare is a leading diagnostics centre and pathology lab in India equipped with the latest state-of-the-art technologies that provides the Anti HBs Antibody Test - HbsAg with a clear pricing structure.

The Anti HBs Antibody Test - HbsAg Price in Mumbai is ₹ 1,080 .

We are committed to deliver accurate and quality results from the best labs in India with complete transparency regarding test cost and turnaround time. No matter where you are, we strive to offer patients high-quality service that is affordable and accessible.

Frequently Asked Questions

The Anti HBsAg test detects the presence and measures the quantity of HBV antibodies in the blood. It is used to determine your level of immunity against the virus. It may be used to look for prior exposure to HBV. 
Additionally, the HBsAb test can reveal whether hepatitis B vaccination was successful and help determine if you need a booster vaccine

Determine if a person has been infected with Hepatitis B: If the test is positive, it means the person is either currently or has been infected in the past.

Monitor the vaccine's effectiveness: The antibody test confirms that a person vaccinated has developed immunity against the virus.

Screen blood and organ donors: The test is used to screen out potential donors who may have been infected with Hepatitis B, as the virus can be transmitted through blood transfusions and organ transplants.

The Anti HBsAg test detects the presence and measures the quantity of HBV antibodies in the blood. It is used to determine your level of immunity against the virus.

The Anti-HbsAg Antibody test measures the number of antibodies generated by the body after infection or exposure to the virus. It is capable of detecting both current and past infections along with a variety of other conditions like immunity, vaccination, etc.

Anti HBsAg test requires a blood sample. A tourniquet (elastic) band is placed tightly on the upper arm. The patient is then asked to make a fist. This helps in the build-up of blood filling the veins. The skin is disinfected before needle insertion and the blood sample is collected in vacutainer

A simple blood test will be conducted to obtain samples from the vein in the arm. No other procedures, such as X-rays or scans, are needed.

 A positive HBsAb result is an indication that you have developed antibodies against HBV and immune to further infection or have been successfully vaccinated (if titre above 10 mIU/mL). If your HBsAb test is negative,  it means that you are susceptible to the virus and a titre below 10 mIU/mL could mean inadequate antibody development post vaccination. 
This test may be negative during the 'window period' or early on in the infection.

No special preparation is required before an Anti HbsAg test. However, you should inform your doctor if you have recently been ill or are on any medication, as this may influence the results.

Normal levels of Anti-HbsAg antibodies vary according to age, sex, and other factors. Levels greater than or equal to 10 IU/ml are generally considered an indicator of protection against Hepatitis B and immunization.

The Anti HbsAg Antibody test is a blood test used to detect the presence of antibodies or markers developed by the body in response to infection by the Hepatitis B virus. It identifies and monitors treatment progress and diagnoses past, ongoing, and future infections.

Below are some of the tests that may be ordered along with an anti-HBsAg antibody test:

• Hepatitis B surface antigen (HBsAg): This test is typically performed to confirm the presence of an active hepatitis B virus infection.

• Hepatitis B virus DNA quantitation: This test measures the amount of hepatitis B virus DNA in a person's bloodstream. This can indicate whether the person is at risk of chronic or recurrent infection.

• Anti-hepatitis B core antibody (anti-HBc): This test is used to detect past infections with the hepatitis B virus.

• Total hepatitis B surface antibody (anti-HBs): This test is used to detect the presence of protective antibodies against the hepatitis B virus, which typically indicate a past encounter with the virus.

• Hepatitis B e antigen (HBeAg): This test detects an active hepatitis B infection.

• Hepatitis B e antibody (anti-HBe): This test detects past exposure to the hepatitis B virus.

• Hepatitis A antibody: This test detects a past or present infection with the hepatitis A virus.

  • HBsAg Antibody Test
  • anti-HBs
  • Hepatitis B Surface Antibody
  • HBsAb
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