How is Hepatitis B Detected?

Detecting Hepatitis B: Blood Tests, Imaging & When to Seek Care

Hepatitis B is caused by the hepatitis B virus (HBV), which affects the liver. According to a study, around 50-70% of people infected with the hepatitis B virus don’t experience any severe symptoms.

Additionally, if they are unaware of their infection, they may unknowingly transmit the virus to others. Therefore, accurate diagnosis and timely treatment are essential for a successful recovery. Continue reading to learn more about the diagnostic procedures that help detect Hepatitis B.

What are the Diagnostic Procedures for Hepatitis B?

Timely diagnosis of hepatitis B is crucial for identifying the stage of infection and preventing further transmission of the virus. Here are the diagnostic procedures followed by the medical practitioners for determining the hepatitis B infection:

1 Physical Examination and Screening

The HBV virus can affect the liver before symptoms appear, so doctors perform physical examinations and screenings to detect the presence of the virus. They assess the skin colour and the abdominal area to identify physical symptoms.

If the medical professional suspects the risk of the hepatitis B virus, they perform screening and other diagnostic tests.

2 Blood Tests

Simple blood tests can detect the presence of HBV and help identify the infection as acute or chronic. They can also reveal if you’re immune to the disease. Here are the key blood tests that the doctor may ask for:

• Hepatitis B Surface Antigen Test (HBsAg): This test helps detect the presence of the Hepatitis B surface antigen (HBsAg) in the blood. If these antigens remain in the bloodstream for over six months, the infection is diagnosed as chronic.
• Hepatitis B Core Antibody Test (Anti-HBc):This test helps classify the stage of hepatitis B infection as either acute or chronic. It identifies antibodies according to the core protein of the virus.
• Hepatitis B Surface Antibody Test (Anti-HBs):This test helps to reveal if you’re immune to the HBV infection. The body may have developed immunity through vaccination or a past infection that it has successfully fought off.
• Hepatitis B e Antigen Test (HBeAg): This test helps detect the presence of a protein produced by the virus. It allows the virus to replicate, which increases the risk of transmission.     
• Hepatitis B Viral DNA Test:This test measures the amount of viral DNA in the bloodstream. The patient may require treatment to combat active infection if the viral DNA load is high.

3 Liver Ultrasound

Liver ultrasound includes imaging tests, such as MRE (Magnetic Resonance Elastography), which helps detect scar tissue in the liver. It indicates the amount of liver damage.

4 Liver Biopsy

It is a procedure that includes removing a small tissue sample from your liver through a needle for lab assessment. The doctors insert a thin needle through the skin into the liver to remove a small tissue sample. This is done to evaluate the liver tissues that blood tests and ultrasound can’t detect.

Early detection and proper medical treatment will help combat the infection effectively and prevent the transmission of the Hepatitis B virus. Timely vaccination can prevent the spread of disease to your loved ones. Ensure they receive the proper doses or shots of the vaccine to avoid serious complications from the infection.

At Star Health, we offer coverage for hepatitis B under some of our health insurance policies. We also provide hassle-free claim settlements with reduced turnaround time across over 14,000 network hospitals in India.