Hi . I know from previous posts that you are very concerned about potential exposure to contaminated blood. In addition to the items already posted, I want to share with you this document from the Centers for Disease Control and Prevention covers exposure to blood, including type of exposure, quantity of blood, and amount of virus in the blood: file:///C:/Users/faust/Downloads/cdc_6853_DS1%20(1).pdf. That said, the only thing that is going to truly give you answers and peace of mind is testing. This article discusses types of tests, including testing window periods: https://h-i-v.net/test-types. Wishing you the best. Richard (Team Member)