This is from the Oraquick website, "Oral fluid HIV tests are very accurate. In studies, the OraQuick In-Home HIV Test detected 91.7 percent of people who were infected with HIV, and 99.9 percent of people who were not infected with HIV."

I cannot speak to the authenticity of Oraquick's claims however. If you still have concerns, I recommend getting blood work done and speaking with your medical provider. Here is also an article from the National Institute of Health on home HIV testing accuracy, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4799243/.