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Updated: Jun 17, 2026

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection

Published on: November 7, 2018

Occult hepatitis B virus infection: a covert operation.

F B Hollinger¹, G Sood

¹Baylor College of Medicine, Houston, TX 77030, USA. blaineh@bcm.edu

Journal of Viral Hepatitis

|December 17, 2009

Summary

Detecting occult hepatitis B (OHB) requires highly sensitive tests for hepatitis B virus (HBV) DNA and HBsAg. OHB is common in chronic hepatitis C (HCV) patients and can reactivate under immunosuppression.

Area of Science:

Hepatology
Virology
Immunology

Background:

Occult hepatitis B (OHB) is a covert condition often found in patients with chronic hepatitis C (HCV).
HCV may influence the replication and latency of hepatitis B virus (HBV).
Detecting HBV DNA does not always indicate infectivity, especially in immunocompetent individuals with anti-HBs.

Purpose of the Study:

To outline the diagnostic requirements for detecting OHB.
To highlight the clinical scenarios prompting OHB assessment.
To discuss the implications of OHB in liver transplantation and immunosuppression.

Main Methods:

Utilizing highly sensitive assays for HBV DNA (<10 IU/mL) and HBsAg (<0.1 ng/mL).
Assessing alanine aminotransferase (ALT) flares during HCV therapy or persistently elevated levels.

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Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA

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Last Updated: Jun 17, 2026

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection

Published on: November 7, 2018

Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA

Real-Time Polymerase Chain Reaction-Based Detection and Quantification of Hepatitis B Virus DNA

Published on: December 15, 2023

Examining plasma for HBV DNA in anti-HBc positive chronic hepatitis C patients.

Considering liver biopsy with immunostaining for HBsAg and HBcAg, and HBV DNA testing.

Main Results:

OHB detection necessitates assays with high sensitivity and specificity.
Elevated ALT levels in HCV patients warrant OHB investigation.
HBV DNA testing in specific chronic hepatitis C cohorts is crucial.
OHB poses a risk for HBV transmission in liver transplant recipients.

Conclusions:

Optimal diagnostic strategies are essential for identifying OHB.
Prompt assessment for OHB is critical in specific patient populations.
Management of OHB in immunosuppressed patients requires careful monitoring or treatment based on serological status.