Her detention has been extended by eight days, the Public Prosecutor reported.
The magistrate will probably rule on Thursday if the detention is lawful. After eight days, the magistrate must decide whether a defendant should be held longer.
The former minister is accused of fraud, misappropriation of public funds, money laundering and forgery. She was arrested last Monday by order of the Public Prosecution.
The Dubnium case is the investigation into the Foundation for Medical Services Agency, which placed an order in 2012 for 40,000 facemasks. Some 365,000 guilders (US$204,900) were paid for these masks that were actually worth only US$4,000, but the products were never delivered.