There is no definitive test for the poisoning however, since megalocytosis is not a change in the liver which is specific to ragwort poisoning.
2.
The result, if sufficient quantity is consumed, can be irreversible cirrhosis of the liver of a form identified as megalocytosis where cells are abnormally enlarged.
3.
Research in the United Kingdom has produced results showing megalocytosis, which may be due to various causes, to be a relatively uncommon cause of liver disease in horses.