Not as an expert in toxicology, the common way I'm qualified is an expert interpreting what the alcohol level means. Half the cases we do involve alcohol, either the unnatural deaths and homicides and often we're asked to interpret the, not to do it, I'm not a toxicologist, absolutely, I'm not an expert in toxicology, but I think all forensic pathologists have to be experts in interpreting drugs in the body. Is it enough to cause death.
An example, we do an autopsy and the result can come back high level of barbiturates or no barbiturates and yet from the history of the autopsy we determined he died by a barbiturate overdose. The toxicologist would say how can you diagnose a barbiturate overdose. Because we do the autopsy, we see that over the five days he was in the hospital, the barbiturate overdose that brought him there got metabolize. By the time he dies, he has no barbiturates in his body, even though the cause of death is a barbiturate overdose.
There is a difference between what the toxicologist is an expert in finding the marijuana, absolutely, I don't do those tests at all.