I would feel better if I knew the ME had tested ANS' hair and nails. There are some poisons that degrade quickly leaving no trace or negligible traces in the blood. However, I know it will stay in hair and nails at least 6 months after death. What type of flora grows in Bermuda? Foxglove? Oleander? Castor beans?
I'm pretty sure he did. Either he said so himself (Perper) or I heard Dr. Baden say he would certainly do so.