It’s important to understand that there are many potential suicide risk variables, the following are a subset of variables with strong empirical research support:
Risk factors including a history of suicidal behaviors; suicidal thoughts; suicide preparation;
Warning signs including severe substance abuse; impulsivity; critical relationship problems; severe health/pain problems; serious sleep problems and legal/financial crisis.
See https://cams-care.com/resources/friends-family/suicide-risk-factors-and-warning-signs-what-weve-learned-from-the-research/ for additional information.