What would you say are most accurate psychiatric illness screening tests one can find online?

DSM V is out soon.: Dsm v has the complete categorical criteria for psychiatric diagnoses. It will be available next month, replacing dsm iv. However one should never engage in self diagnosis but see a trained professional to verify any concerns that you have.

none: While reading about illnesses online can be informative, it is critically important to read credible, reliable, relevant, scientific material. Check with your doctor for a few web site references. Secondly, there are no tests for psychiatric disorders. Screening tests need to be done by physicians who can evaluate for other illnesses that mimic depression and anxiety, for example.