The judge overseeing the resolution of Prince’s estate on Friday ordered genetic testing on a sample of the late superstar’s blood, saying “parentage issues” might arise and time is short.

Carver County, Minn., District Judge Kevin Eide signed the order authorizing the temporary special administrator of the estate, Bremer Trust, to obtain the blood sample from the Midwest Medical Examiner, which conducted the autopsy on Prince’s body, and have it genetically analyzed “for any purpose relevant to the administration of the Estate.”

The judge’s order recognized that “parentage issues” could arise and that “timing can be a concern when conducting genetic testing.”

The order said Bremer Trust is authorized to hire DNA Diagnostics Center to do the testing.

After Prince was found dead on April 21 in his Paisley Park compound in Carver County, an autopsy was conducted and samples taken, as is usual in any autopsy. Prince’s body was later cremated. The final word on the cause of death is pending further testing but investigators are looking into whether prescription painkillers played a role.

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Meanwhile, the fate of his estate, valued as high as $300 million, is up in the air because so far no will has been found and the list of his potential heirs is growing. As administrator, Bremer Trust is now engaged in looking for a possible will, organizing Prince assets (such as real estate and music), and seeking out legitimate relatives eligible to inherit a portion of his estate.

Prince left no parents, children or spouses. Besides his full sister, Tyka Nelson, and at least five half-siblings who have been named in court documents, one other woman has come forward to claim she is a half-sibling, and the descendants of another half-sibling (now dead) could be heirs, too.

John Hilbert and Shar Mansukhani, co-owners of Heir Hunters International, a company that searches for long-lost heirs to unclaimed estates, told USA TODAY they have received hundreds of calls and emails since Prince’s death from people claiming to be a long-lost relative to Prince. They said they are investigating the bonafides of one man in his 30s who says he believes Prince was his father although he has yet to say so publicly.

Sorting all this out may come down to the DNA. Under Minnesota law, full siblings and half-siblings are treated equally for the purposes of inheritance. Both of Prince’s now deceased parents had children with other spouses and relationships.

The estate has to separate the legitimate relatives from the scores of people coming forward, many of whom may be frauds or mistaken, before it can fairly distribute the assets of Prince’s estate.