Here are the comments at the end of the autopsy report.
COMMENTS: The absence of body parts in this case may simply be attributable to postmortem change, animal feeding, and tidal action , there is no evidence of tool marks on remaining bones of the extremites or on the thoracic vertebral column. Toxicology testing performed on skeletal muscle is positive only for caffeine and PEA (decomposition product.)
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Laci Peterson Autopsy Report