WHAT IS ALREADY KNOWN ON THIS TOPIC
Increasing rates of ever and repeat testing is critical to supporting sustained reductions in HIV incidence for men who have sex with men (MSM; cis and transgender); HIV self-testing (HIVST) is a relatively novel approach which may support this key goal. Evidence about harms from HIVST among key populations is scant: a recent systematic review and meta-analysis of 10 randomised controlled trials comparing HIVST to standard testing among key populations found evidence of harms only in trials including female sex workers and none for MSM or trans people