What varying approaches do you take in suicide risk assessments?  

I agree with the following from Dr. @Frederick: "Ultimately, no scale or method is going to be perfect. We are unfortunately bad at predicting which individuals with suicidal ideation progress to an attempt. The most we can do is gather as much information as possible about how someone is feeling i...

I do use the C-SSRS. I find that it is a useful framework for the different levels of severity of suicidal ideation, and it is most effective when assessing more than one point in time. I think that regardless of what scale you use, a good risk assessment for suicide should include a description of ...

Combining a questionnaire with an individualized approach for each patient is the best.

I, too, have found that an individualized approach, especially careful interviewing, is a good approach.  But, if I have any doubts, I add a questionnaire assessing suicidal ideation.