Blood '''[[Urea|urea]]''' concentration may be elevated in cases of gastro-intestinal haemorrhage. Haemorrhage will lead to the loss of plasma proteins, producing a [[Hypoalbuminaemia|'''hypoalbuminaemia''']]. | Blood '''[[Urea|urea]]''' concentration may be elevated in cases of gastro-intestinal haemorrhage. Haemorrhage will lead to the loss of plasma proteins, producing a [[Hypoalbuminaemia|'''hypoalbuminaemia''']]. |