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lukeyeats said:
I didnt diagnosed my self i took a screening test

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I'm not sure where you took this screening test, but here at Psych Central, you'll notice that it has a caveat when reading the results:

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[b]The Psych Central bipolar screening test said:[b]
<font color="red">You should not take this as a diagnosis of any sort, or a recommendation for treatment. However, you may want to look into seeking further consultation with a trained mental health professional if you are experiencing any difficulties in daily functioning or if you'd like a more in-depth answer.</font>

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So you should not be certain, even if you did take a screening test online. Questions can be ambiguous and you're likely to get a far more accurate diagnosis from a qualified dr (... I would hope ...)