About the Authors

Natasha Gous

natasha.gous@gmail.com

Affiliations Department of Haematology and Molecular Medicine, School of Pathology, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa, National Priority Program of the National Health Laboratory Services, Johannesburg, South Africa

Lesley Scott

Affiliation Department of Haematology and Molecular Medicine, School of Pathology, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa

Leigh Berrie

Affiliation National Priority Program of the National Health Laboratory Services, Johannesburg, South Africa

Wendy Stevens

Affiliations Department of Haematology and Molecular Medicine, School of Pathology, Faculty of Health Sciences, University of Witwatersrand, Johannesburg, South Africa, National Priority Program of the National Health Laboratory Services, Johannesburg, South Africa

Competing Interests

The authors declare that no competing interests exist. Cepheid provided the technical support and Xpert HIV-1 VL testing kits for the study but was not involved in study design, data collection, analysis, or manuscript preparation. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: WS. Formal analysis: NG LS. Funding acquisition: WS. Investigation: NG. Methodology: NG LS. Project administration: LB WS. Resources: LB WS. Supervision: LS WS. Validation: NG. Visualization: NG LS. Writing – original draft: NG LS. Writing – review & editing: NG LS LB WS.