The goal of such tests, says IntegraGen general manager Larry Yost, is to have children at very high risk for autism referred to specialists for a definitive diagnosis earlier.

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Mr Gibson was using his member's debate to highlight the work undertaken by the Glasgow Epilepsy Genetics Service (GEGS), which has used testing across six genes to give 2, 500 patients definitive diagnosis of their condition.

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Obviously I can't make any type of definitive diagnosis with the brief information you provide, but let me tell you a few things to look for that would make the presence of a manic episode more likely.

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But Roy Miller said that she had not received so definitive a diagnosis, and that, in any case, it could be difficult to sustain in court the notion that Amy was beset by extreme delusions.

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