Delphine Boel, a Belgian artist and sculptor, claims that the king had a deal with his mother, Sibylle de Selys Longchamps, as a result of her birth in 1968.
Albert married Paola Ruffo di Calabria, later Queen Paola of Belgium, in 1959 he became king.
In 2013, at the age of 79, he abdicated the throne in favor of his son Philip, referring to his age and health concerns.
In the same year, Bolel began a lawsuit to see the former king recognized by her father.
In October 2018, the Brussels Court of Appeal ruled in favor of it and ordered Albert to submit a DNA test, but so far he did not.
Albert must now be subjected to a trial by a forensic expert-expert or convict a fine, said the court of appeals on Thursday.
At the request of Boyle, the DNA test result will be confidential until completion of the trial. Her lawyer, Mark Witthendel, told AFP that she "offered this option to calm the situation and avoid media assault."
"I can not imagine for a moment that he does not obey the test," said Whittendel.
Albert's lawyer, Guy Herno, told CNN that the former king had "left the country" by Sunday and had not yet responded to it
"We will probably be talking on Monday or Tuesday to discuss the matter further," Herno said.
"I think that he will take the test because he will be confidential, so there is no reason not to do so. "he added," he added. "It was his position from the outset that the DNA test was premature, but he would never miss I was going to do it. But we had to wait for this verdict before doing the DNA test. "
If Albert was his father, Baule would have the right to have a Delphin Van België and, under the royal decree, could also take the title of the princess, informs the branch of BTW Belgium CNN.