Lawyers for a mother of five say she would be at "a significant risk" of suicide if she is extradited to the US to face charges of supplying chemicals used to make drugs.
Lawyers for Kerry Ann Howes are planning to fight the move to send her across the Atlantic for a trial claiming it would be unjust or oppressive
because of her mental state.
Judges at the Court of Criminal Appeal in Edinburgh said a competency hearing on the move would be required ahead of any evidence on her condition.
Howes' lawyer told the court that psychiatric reports on his client had been obtained on her behalf and for the Crown.
Mrs Howes (31) and her husband Brian (45) from Bo'ness, in West Lothian, are both wanted by the American authorities over allegations that they supplied chemicals, such as red phosphorus, used to make the illegal drug methamphetamine, known as crystal meth.
They lost a fight against their extradition at Edinburgh Sheriff Court and turned to the Appeal Court in a bid to prevent their hand over to the United States.
Mrs Howes has now lodged a motion seeking her discharge from the extradition proceedings.
Under the Extradition Act a judge can make such an order if satisfied that the physical or mental condition of the person is such that it would be unjust or oppressive to extradite them.
Mrs Howes lawyers said she has no previous convictions and denied any involvement in the supply of chemicals to the US knowing that they would be used in the manufacture of illegal drugs.
She was held in Cornton Vale women's prison in 2007 prior to her release and is said to have developed an adjustment disorder with severe anxiety symptoms.
The Crown confirmed that it is still seeking to support the extradition of Mrs Howes.
Lord Osborne said a competency hearing would be fixed on the defence move, with no date yet set.
