A Study to Evaluate the Performance, Usability, and Result Interpretation of INSTI® HIV Self-Test

The objective of this study is to evaluate the performance, usability, and result interpretation of the INSTI® HIV Self-Test (referred to INSTI® HIV ST) in the intended user population across the United States (US). This study is designed to evaluate INSTI® HIV ST performance in the hands of non-professionals and untrained lay users who are inexperienced in HIV self-testing. The study aims to: To evaluate the clinical performance (i.e., diagnostic sensitivity and specificity) of the INSTI® HIV ST in a lay user population. To assess the user's comprehension of the INSTI® HIV ST results (e.g., interpreting positive, negative, and invalid results). To evaluate the usability of the INSTI® HIV ST and understand users' experience in performing the test. Subjects will be consecutively enrolled from the 'general' population (i.e., "all comers" group of previously undiagnosed HIV individuals) until a minimum of 27 HIV positive and 1000-1700 HIV negatives are obtained. Subjects will be lay users recruited at multiple sites across the US. This study is to determine if lay users, unassisted, can perform the INSTI® HIV ST correctly and without significant risk of incorrect results. The study will help to determine if the INSTI® HIV ST instructions are easy to understand for the US public. The overall study processes include a performance evaluation, where subjects will perform the INSTI® HIV ST, a mock results interpretation study to assess the user's comprehension of the INSTI® HIV ST results and usability evaluation to understand users experience with the INSTI® HIV ST. Only a subset of the enrolled subjects (500 subjects) will participate in the mock results interpretation study and usability evaluation. For the performance evaluation, subjects will perform the INSTI® HIV ST without any intervention from an observer. Following the subjects self-testing, an operator will collect an additional fingerstick sample to perform a comparator test. The positive and negative percent agreement (i.e., PPA and NPA) between the INSTI® HIV ST result and comparator will be calculated. In the event of discrepant results between the INSTI® HIV ST and comparator test, an additional venous blood sample will be collected from the subject for discrepancy testing. A subset of the enrolled subjects will then participate in the mock results interpretation study and usability evaluation. For the mock study, the subjects will be presented with 5 mock INSTI® HIV ST devices with different results, and the subject's interpretation of each device will be recorded. The percentage of subjects who interpreted the mock results correctly for each result type will be calculated. For the INSTI® HIV ST usability evaluation, the subjects will be presented with a questionnaire. The overall results of the questionnaire will be used to determine the percentage of subjects who found the INSTI® HIV ST easy to use.