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Blood urea coentration may be elevated independently of creatinine for the following reasons:
Blood urea coentration may be elevated independently of creatinine for the following reasons:
*Gastro-intestinal haemorrhage, as with [[Gastric Ulceration - Dog|gastro-duodenal ulceration]].
*Gastro-intestinal haemorrhage, as with [[Gastric Ulceration - Dog|gastro-duodenal ulceration]].
*Diet with high purine content, such as liver.
*Diet with high protein or purine content, such as liver.
*Increased catabolism of body tissues, particularly muscle, which may occur in pyrexic animals or those with systemic disease.
Reduced urea concentration:
Reduced urea concentration may occur due to:
*Over-enthusiastic fluid therapy, diluting the urea present in the blood.
*Disease that cause polyuria and/or polydipsia may cause 'medullary washout' of urea. Common examples include pyschogenic polydipsia, [[Diabetes Insipidus|diabetes insipidus]] and [[Canine Hyperadrenocorticism - Cushing's Disease|Cushing's disease]].
*Reduced synthesis with [[Portosystemic Shunt|porto-systemic shunts]], [[Hepatic Microvascular Dysplasia|microvascular dysplasia]] or liver failure.
*A diet with a low protein content or malnutrition.
[[Category:Blood_Sample]][[Category:Dog]][[Category:Cat]][[Category:Cattle]][[Category:Sheep]][[Category:Horse]][[Category:Pig]][[Category:Donkey]][[Category:To_Do_-_James]]
[[Category:Blood_Sample]][[Category:Dog]][[Category:Cat]][[Category:Cattle]][[Category:Sheep]][[Category:Horse]][[Category:Pig]][[Category:Donkey]][[Category:To_Do_-_James]]