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| See also:

| See also:

|'''[[Blood urea nitrgoen|Urea in lizards]]'''

|'''[[Blood urea nitrogen|Urea in lizards]]'''

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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 Ulcer - 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 purine content, such as liver.