Laboratory operations, specimen processing, and handling for viral load testing and surveillance

Area of Science:

• Molecular diagnostics
• Virology
• Public health

Background:

• RNA is the primary biomarker for human immunodeficiency virus type 1 (HIV-1) load and drug resistance surveillance.
• Current nucleic acid amplification tests for viral load are complex, expensive, and confined to centralized laboratories.
• Extending viral load testing to rural or remote settings presents significant logistical challenges.

Purpose of the Study:

• To address the gap in sample processing technologies for field-based HIV-1 diagnostics.
• To explore novel technologies for clinical specimen preservation and nucleic acid extraction at the point of collection.
• To facilitate improved access to viral load testing and drug resistance surveillance in low-resource settings.

Main Methods:

• Review of emerging nucleic acid-based technologies suitable for field use.
• Identification of potential applications in clinical specimen preservation and processing.
• Focus on technologies enabling nucleic acid stabilization at the point of specimen collection.

Main Results:

• Emerging technologies are advancing towards field-deployable platforms for nucleic acid amplification.
• A critical need exists for complementary sample processing solutions.
• Novel extraction and stabilization technologies can potentially overcome current limitations.

Conclusions:

• Point-of-collection nucleic acid extraction and stabilization technologies can bridge the gap for field-based HIV-1 diagnostics.
• These innovations offer potential alternative solutions to centralized laboratory testing paradigms.
• Improved access to viral load and drug resistance testing is achievable in resource-limited settings.