In Ontario, if a diagnostic HIV test result is HIV-positive, a Laboratory Enhancement Program (LEP) form is sent to the health care provider who conducted the test in order to collect further information on the person who tested HIV-positive. This includes information collected on the original test requisition, as well as additional information. Since 2009, the LEP form has collected information on race/ethnicity and country of birth, both of which were not historically collected on the HIV test requisition form. However, the test requisition was revised in 2018 to collect this information. As LEP data are not available for HIV-negative tests, only data from the test requisition are used to describe trends in HIV testing. Information from both the requisition and LEP are used to describe new HIV diagnoses (i.e. HIV-positive tests).