<unk>  <unk>  is a medical test that measures the amount of<unk><unk>  found in blood. The liver produces<unk>  in the<unk>  cycle as a waste product of the digestion of protein. Normal human adult blood should contain 6 to 20 mg/dL (2.1 to 7.1 mmol/L) of<unk><unk> . Individual laboratories will have different reference ranges as the assay used can vary between laboratories. The test is used to detect renal problems. It is not considered as reliable as creatinine or<unk> /creatinine ratio blood studies.
Blood urea nitrogen
Blood protein
Uric acid
Hematocrit
Glycated hemoglobin
Urine osmolality
Serum total protein
Urine sodium