WOUNDCHEK Bacterial Status Performance With Trained vs Untrained Users

The purpose of this clinical study is to evaluate the performance of WOUNDCHEK™ Bacterial Status (WCBS) with untrained users in diverse CLIA waived locations and trained users and compare the results to those obtained in the study used for De Novo approval (DEN180014). Untrained and trained users are as defined in the FDA guidance document entitled 'Recommendations for Clinical Laboratory Improvement Amendments of 1988 (CLIA) Waiver Applications for Manufacturers of In Vitro Diagnostic Devices' (Feb 2020). The test result will be blinded to the clinician treating the wound. The healing outcome at 12 weeks following the test will be compared for wounds positive vs negative for bacterial protease activity (BPA). Study success criteria will be that the positive likelihood ratio (PLR) of a BPA positive wound being non-healing at 12 weeks for both trained and untrained users will be statistically comparable to the PLR obtained in the study submitted for DEN180014.