<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Are there any poisons that aren't detectable on an autopsy?
<|assistant|>
Yes, there are certain poisons such as polonium-210 and thallium that cannot be detected on an autopsy. However, if there is enough evidence that a person was exposed to these poisons, such as presence of the poison in their body, then a coroner will make a determination of the cause of death.