Place tissue in 10% buffered formalin for three days (72 hours) for optimal fixation. The tests … In some circumstances a post-mortem examination may be required or requested. Author information: (1)Pennsylvania Equine Toxicology & Research Laboratory, West Chester University, PA 19383, USA. After the post mortem-examination decisions will need to be made about what should happen to the removed organs and tissue samples. cellulose tissue) and stored separately. If the contents are nonhomogeneous, then preferably the whole stomach contents should be collected. Normal post mortem tissue samples and samples from a wide range of diseases can be collected. The availability of the whole organ, particularly in the case of diseases where both diseased & healthy tissue may be present in different areas of the same organ (such as a breast cancer tumor within the breast), facilitates the evaluation of disease in situ. The volume of formalin used to fix tissues should be 10x the volume of tissue. Uboh CE(1), Rudy JA, Railing FA, Enright JM, Shoemaker JM, Kahler MC, Shellenberger JM, Kemecsei Z, Das DN. Tissue specimens: Sampling in separate containers. This is an examination of a body after death and during this examination; organs and tissue samples may need to be removed for investigation. For cases of poisoning where gaseous or volatile substances are involved, samples of brain, lungs and blood must be collected immediately using gas-tight Postmortem tissue samples: an alternative to urine and blood for drug analysis in racehorses. What happens when body tissue samples are taken If there is a post mortem, the pathologist will probably take some body tissue samples to do some tests. Collection of tissue samples roughly 4-5 mm in thickness (i.e., sample would fit in a tissue cassette) is recommended for optimal fixation.

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