What is the best free, online, quick bipolar disorder test?

There is none: There is no reliable quick bipolar disorder test.You might have all symptoms in the questionnaire.You need to rule out other cause.If you suspect you might have bipolar disorder, a psychiatric consultation is important.It is not benign if not treated.

Bipolar Test: Anyone who may have bipolar disorder should be formally evaluated by a psychiatrist and/or psychotherapist. This is not a disorder that is easily diagnosed, and the risk of going undiagnosed is too great, as untreated bipolar disorder can have catastrophic effects (due to impulsivity, suicide risk, etc.) upon virtually every aspect of one's life. Medication treatment is usually a necessity.