Dear Khalid there are a lot of tool but according to my idea DASS will be an easy and it is multidimensional including Depression, Anxiety and Stress. u can measure Depression, Anxiety and Stress by using this single tool.
Dear Khaled, the General Health Questionnaire by Goldberg is a brief and of proven validity tool. It is especially useful for general population, and you can use different versions, even with 12 items. It is highly recommendable if you are working with medical variables. Good luck and regards.