[[Sodium|Sodium]], [[Potassium|potassium]] and [[Chloride|chloride]] levels are presently evaluated in a similar manner to mammals. There is a wide variation in normal levels among and within species. High [[Potassium|potassium]] levels generally carry a poor prognosis. | [[Sodium|Sodium]], [[Potassium|potassium]] and [[Chloride|chloride]] levels are presently evaluated in a similar manner to mammals. There is a wide variation in normal levels among and within species. High [[Potassium|potassium]] levels generally carry a poor prognosis. |