Reliability of methods for hepatitis B virus DNA detection

Area of Science:

• Virology
• Molecular Diagnostics
• Clinical Laboratory Science

Background:

• The European Group for Rapid Viral Diagnosis and European Expert Group on Viral Hepatitis established a quality assurance program.
• Monitoring nucleic acid detection methods for hepatitis B virus (HBV) DNA in serum is crucial for accurate diagnosis and patient management.

Purpose of the Study:

• To evaluate the performance and reliability of HBV DNA detection methods, primarily polymerase chain reaction (PCR), across multiple European laboratories.
• To identify potential issues with specificity and sensitivity in routine HBV DNA testing.

Main Methods:

• A quality assurance program involving 39 laboratories was conducted.
• Participants analyzed a coded panel of seven HBV DNA-positive and five HBV DNA-negative serum samples.
• Two dilution series, one from a patient and one from recombinant DNA, were included for quantitative assessment.

Main Results:

• 60.5% of data sets achieved faultless results with dilution series.
• 27.9% correctly identified undiluted samples, while 44.2% exhibited false-negative or false-positive results.
• Only 23.3% of data sets performed well across the entire sample panel.

Conclusions:

• The study highlights significant specificity and sensitivity problems in HBV DNA detection using PCR among participating laboratories.
• These findings underscore the need for careful interpretation of PCR test results in clinical settings.
• Continuous quality assurance is essential to improve the accuracy of viral load quantification.