This report presents a critical appraisal of the research paper by Day et al. (2018), which investigates drug use patterns and attitudes towards drug checking services among youth attending music festivals. The report begins with an introduction to critical appraisal in evidence-based practice, followed by an evaluation of the authorship, research questions, design, and methods of the study. The report identifies strengths, such as the use of a quantitative cross-sectional survey, and weaknesses, including convenience sampling and potential biases. The findings indicate that drug checking services can help reduce the consumption of harmful drugs. Part B applies the research to a case scenario involving Emily, who is attending a music festival. The report discusses enablers and barriers to applying the research findings in practice, such as organizational and personal barriers. The conclusion highlights the relevance of the paper and the importance of critical appraisal in healthcare practice, emphasizing the need for evidence-based approaches to address public health concerns like illicit drug use among young people. The report includes a discussion of the paper's relevance to a case study and its contribution to harm reduction strategies, concluding with a call for evidence-based practice in the field of healthcare. The report emphasizes the importance of critical evaluation for the application of research in real-world clinical settings and the development of harm reduction strategies.