Hepatitis B Profile – Test Details & Precautions

The Hepatitis B Profile consists of multiple tests to detect different antigens and antibodies associated with Hepatitis B virus (HBV) infection. These tests help in diagnosing active infections, past infections, immunity, and disease progression.

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Hepatitis B Profile Includes:

1. HBeAg (Hepatitis B e-Antigen)
2. HBeAb (Hepatitis B e-Antibody)
3. HBsAg (Hepatitis B Surface Antigen)
4. HBsAb (Hepatitis B Surface Antibody)
5. HBcAb-M (Hepatitis B Core Antibody IgM)

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1. HBeAg (Hepatitis B e-Antigen)

✔ Purpose:

• Indicates active Hepatitis B virus replication.
• Found in chronic or highly infectious cases.

🔹 Results Interpretation:
✔ Positive – High viral activity & increased infectivity.
✔ Negative – Low or no viral replication.

✅ Precautions:

• No fasting required.
• Often tested along with HBV DNA viral load for confirmation.

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2. HBeAb (Hepatitis B e-Antibody)

✔ Purpose:

• Appears when the immune system fights the infection.
• Suggests lower infectivity and reduced viral replication.

🔹 Results Interpretation:
✔ Positive – Infection is resolving or in a non-infectious state.
✔ Negative – Active viral replication may still be present.

✅ Precautions:

• No fasting required.
• Best interpreted along with HBeAg levels.

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3. HBsAg (Hepatitis B Surface Antigen)

✔ Purpose:

• Primary marker of active Hepatitis B infection.
• Used for screening & diagnosing HBV infection.

🔹 Results Interpretation:
✔ Positive – Active Hepatitis B infection (acute or chronic).
✔ Negative – No current infection (or recovered).

✅ Precautions:

• No fasting required.
• If positive for more than 6 months, it indicates chronic Hepatitis B.

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4. HBsAb (Hepatitis B Surface Antibody)

✔ Purpose:

• Indicates immunity to Hepatitis B, either from vaccination or past infection.

🔹 Results Interpretation:
✔ Positive – Protected against Hepatitis B (due to prior infection or vaccination).
✔ Negative – No immunity, vaccination may be needed.

✅ Precautions:

• No fasting required.
• A high HBsAb level (>10 mIU/mL) indicates strong immunity.

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5. HBcAb-M (Hepatitis B Core Antibody – IgM)

✔ Purpose:

• Indicates recent or ongoing Hepatitis B infection.
• Helps differentiate between acute and chronic HBV.

🔹 Results Interpretation:
✔ Positive – Recent acute Hepatitis B infection.
✔ Negative – No recent HBV infection.

✅ Precautions:

• No fasting required.
• Best tested along with HBsAg and HBeAg.

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Summary of Hepatitis B Profile

Test	Purpose	What It Detects?
HBeAg	Active infection	High viral replication & infectivity
HBeAb	Recovery marker	Low viral activity & reduced infectivity
HBsAg	Screening test	Current Hepatitis B infection
HBsAb	Immunity marker	Past infection or vaccination protection
HBcAb-M (IgM)	Acute infection marker	Recent or ongoing Hepatitis B infection

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General Precautions:

✔ No fasting required.
✔ If HBsAg is positive, further tests like HBV DNA viral load & liver function tests (LFTs) are recommended.
✔ Vaccination is advised for those with negative HBsAb to prevent infection.
✔ If HBeAg is positive, follow-up with a doctor is crucial for monitoring liver health.