Authorities have been unable to establish how he died , so further tests on the 20-year - old have been ordered , the Los Angeles County Department of Coroner has revealed . TOXICOLOGY TEST ORDERED FOR DR andre young jr . dr . dre s son . DRE 'S SON : Autopsy alone could not determine cause of death andre young jr andre young .
Question: What may be the reason for ordering toxicology tests ?
The answer to the above question:


They want answers as to how the person died .