UrSure Inc. aims to prevent HIV by driving adherence to the drug, PrEP. If taken daily, PrEP is 99% effective at preventing HIV infections in non-infected individuals. Nationwide, PrEP adherence is estimated between 20 and 50%, but UrSure Inc. has driven adherence to over 70% in its HIV prevention clinic in Philadelphia through its urine tests. UrSure’s urine tests are noninvasive and painless, cheaper, more accurate, and have a faster turnaround time than alternative PrEP tests.