Achieving the first of the Joint United Nations Programme on HIV/AIDS (UNAIDS) 90-90-90 targets: understanding the influence of HIV risk perceptions, knowing one's partner's status and discussion of HIV/sexually transmitted infections with a sexual partner on uptake of HIV testing.

This study assessed how HIV risk perceptions, knowledge of one's partner's status and discussion of HIV/sexually transmitted infections (STIs) with one's sexual partner influence the uptake of HIV testing. Data were obtained from 833 young adults, selected using stratified random sampling in a South African university in 2018. Adjusted and unadjusted logistic regression models were employed to examine determinants of HIV testing uptake. The majority of students (69.9%) had previously tested for HIV, but only 58.4% tested for HIV in the last year. Being highly concerned about contracting HIV/STIs was positively associated with having tested for HIV (adjusted OR [AOR]: 4.28; CI: 2.50 to 7.34) and getting an HIV test in the past year (AOR: 1.83; CI: 1.20 to 2.80). Knowing one's partner's status was associated with a higher probability of ever having been tested for HIV (AOR: 3.07; CI: 1.89 to 4.97) or having received an HIV test in the previous year (AOR: 2.66; CI: 1.77 to 3.99). Discussion of HIV/STIs was associated with higher odds of having ever been tested for HIV (AOR: 3.81; CI: 2.44 to 5.96) and recent HIV testing (AOR: 3.22; CI: 2.17 to 4.77). HIV testing was below the Joint United Nations Programme on HIV/AIDS UNAIDS 90-90-90 target. Being concerned about contracting HIV, discussion of HIV/STIs with a sexual partner and knowing one's partner's HIV status were associated with the uptake of HIV testing.