Scale-up of Routine Viral Load Testing in Resource-Poor Settings: Current and Future Implementation Challenges

Area of Science:

• Public Health
• Infectious Diseases
• Medical Diagnostics

Background:

• Antiretroviral therapy (ART) scale-up has advanced, yet access to care and achieving global HIV/AIDS targets remain challenged.
• Viral load (VL) testing is recommended by the WHO for monitoring ART effectiveness, adherence, and preventing treatment failure.

Purpose of the Study:

• To identify and describe the barriers to viral load testing scale-up in resource-limited settings.
• To highlight the importance of diagnostics in meeting global HIV/AIDS treatment goals.

Main Methods:

• Review of current challenges in implementing VL testing.
• Analysis of evolving diagnostic technologies like dried blood spots and point-of-care tests.
• Examination of health system and laboratory system requirements.

Main Results:

• Cost and complexity of VL testing hinder its adoption in resource-limited areas.
• Lack of clinician awareness regarding long-term patient benefits and program longevity impacts implementation.
• Advancements in dried blood spot analysis and point-of-care technologies offer potential solutions.

Conclusions:

• Effective scale-up requires health and laboratory system strengthening, reduced test prices, and addressing programmatic and funding challenges.
• Improving access to VL testing is essential for improving patient outcomes and sustaining HIV/AIDS treatment programs globally.