Urea is made when protein is broken down in body. Liver is responsible for urea and passed out-of-body through urine.
High levels of urea in blood can result in: Vomiting and/or diarrhea, Dehydration, Nausea, Weight loss, Nocturnal urination, Foamy or bubbly urine, More frequent urination, or in greater amounts than usual, with pale urine, Less frequent urination, or in smaller amounts than usual, with dark colored urine, Blood in the urine, Pressure, or difficulty urinating.

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