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Comprehensive & Cost Effective Laboratory Monitoring of HIV/AIDS: an African Role Model
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ViraLite: An Ultracompact HIV Viral Load Self-Testing System with Internal Quality Control.

Anthony J Politza1, Tianyi Liu2, Aneesh Kshirsagar2

  • 1Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, United States.

Medrxiv : the Preprint Server for Health Sciences
|April 16, 2025
PubMed
Summary
This summary is machine-generated.

A new ViraLite system offers accessible HIV viral load testing for better self-management. This user-friendly, battery-powered device improves HIV monitoring and patient empowerment.

Keywords:
HIVLAMPinternal quality controlmolecular probesmultiplexviral load testing

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Area of Science:

  • Biomedical Engineering
  • Infectious Diseases
  • Point-of-Care Diagnostics

Background:

  • Effective antiretroviral therapy (ART) manages HIV, but requires consistent viral load (VL) monitoring.
  • Limited access to frequent VL testing hinders optimal patient self-management.
  • There is a critical need for accessible, user-friendly VL testing solutions.

Purpose of the Study:

  • To develop ViraLite, a compact, accessible, and battery-powered system for HIV viral load monitoring.
  • To enable frequent VL monitoring and empower self-management for people living with HIV (PLHIV).

Main Methods:

  • Development of a probe-based RT-LAMP assay for multiplexed HIV VL detection and quantification.
  • Integration of an internal RNase P control for enhanced result reliability.
  • Utilized a machine learning-powered real-time sensing system and smartphone-guided protocol for assay analysis.

Main Results:

  • ViraLite achieved 93.3% sensitivity and 100% specificity in analyzing archived samples when using the RNase P control.
  • The RNase P control improved sensitivity from 66.66% to 93.33% by identifying 17 previously inconclusive samples.
  • Survey results showed over 86% of PLHIV valued ViraLite's convenience and privacy, though 61% expressed concerns about accuracy.

Conclusions:

  • ViraLite offers an accurate, user-friendly solution for HIV viral load self-management.
  • The system integrates compact hardware, a reliable assay, and smartphone guidance for frequent monitoring.
  • Addressing accuracy concerns is crucial for widespread adoption and improved HIV care.