[ProfessorLayton]

PrEP is incredibly effective, and even better than condoms at preventing HIV. There's various reasons it requires regular testing:

- While very effective, it requires people to actually take it consistently, which is why the injectable form is better for some than the pill.

- PrEP is not without side effects for a small portion of its users. In some cases it can cause bone density loss, or kidney damage. These tests are intended to catch any issues before they cause any permanent damage.

- Since people are coming in to get tested for the aforementioned issues, they also run a full STI panel. This is great and it means those on PrEP (And those managing HIV) are tested more frequently than the general population, and are less likely to transmit an STI than those who don't come in for regular testing.