Quantitative nucleic acid amplification methods and their implications in clinical virology

Area of Science:

• Clinical Virology
• Molecular Diagnostics
• Infectious Diseases

Background:

• Viral load (VL) quantification of nucleic acids in clinical samples is crucial for patient management.
• VL tests are integral to routine diagnosis, monitoring antiviral treatment, and evaluating infectivity.
• In-house viral testing faces standardization challenges, leading to increased use of FDA-cleared assays.

Purpose of the Study:

• To review various viral quantification methods.
• To discuss the clinical applicability of VL testing in specific viral infections.
• To explore challenges and future perspectives in viral load testing.

Main Methods:

• Literature review of viral quantification techniques.
• Analysis of clinical applicability in Human Immunodeficiency Virus (HIV), Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), Cytomegalovirus (CMV), and Epstein Barr Virus (EBV).

Main Results:

• Summary of diverse viral quantification methodologies.
• Discussion of the utility of VL testing across multiple viral infections.
• Identification of current challenges and future directions for VL assays.

Conclusions:

• Viral load testing is essential in clinical virology for patient care and treatment monitoring.
• FDA-cleared tests are increasingly replacing in-house assays due to standardization benefits.
• Continued advancements in VL testing are needed to address evolving diagnostic and therapeutic needs.