Isoniazid hair drug levels among TB patients as a tool to monitor adherence, exposure, and TB treatment outcomes and its acceptability in a multicultural setting. A narrative review

This narrative review examines literature evidence on isoniazid hair drug levels as a tool to monitor adherence, exposure, and TB treatment outcomes, as well as the acceptability of using human hair for medical testing. The review searched databases including Pubmed, Embase, Medline, and Google Scholar. From an initial 186,859 articles, only 14 remained after refinement, with limited articles addressing the research question. The study concludes that literature on isoniazid hair drug levels among TB patients as a monitoring tool is limited and more research is needed.