Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: Rap impresario Dr andre young jr dr dre . Dre 's 20-year - old son was found dead over the weekend in his Woodland Hills home , coroner 's officials said . TOXICOLOGY TEST ORDERED FOR DR . DRE 'S SON : Autopsy alone could not determine cause of death andre young jr .

Question: Why are they testing the young man 's blood ?
For a cause of death .
To determine cause of death.