system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do toxicology reports take so long?

It seems like if someone goes into an emergency room, they can get a toxicology report super fast depending on the emergency but if someone dies the toxicology report takes months. Why is that?
gpt
Because the lab prioritizes the ER patients.  In addition, there is no "oops, go get another sample" in an autopsy so they have to be very careful and test more selectively across a broader group of possible toxins as this report will become the "permanent record".