Qpass measures almost all the constructs assessed by the SCL-90-R (the Symptoms Checklist 90 - Revised yet also has the capacity to assess suicide risk and violence risk.

Note that the SCL-90-R scales assessing depression, anxiety, and anger (Hostility) are not full and comprehensives scales: they have only 6-13 items each. In contrast, the Qpass scales for depression, anxiety, and anger are comprehensive, with 26-28 items each.

The SCL-90-R costs $4.65 to per test, almost 7 times the cost of Qpass!