morbid question about finding autopsy studies

[Lernermichelle]

Someone from the shelter I used to work with asked me to help her find a place that can do a toxicity study on a deceased cat, which they have frozen.  They think there was veterinary malpractice (the cat died in surgery, after several others did as well with the same new vet) and do not know where to get this kind of study. Apparently they brought the cat to Tufts, a university vet hospital, and they did a necropsy but no tox analysis.   any thoughts?   thanks, michelle