there is more to this than meets the eye. unfortunately it is suppressed in new zealand where the inquest took place.
affidavits given to the police/coroner state that the doctor treating rodney self medicated with the base supply of morphine and ketamine. he also offered these to others at the base for recreational use. rodney did not take these. the doctor probably tried to cover up his own illegal use of drugs under his supervision by claiming rod had needle marks. doctor made marks. us marshal later ordered that the empty drug vials/containers, found by doctors bed, be destroyed.
does that make things a little clearer??