The<unk>  <unk>  test is a measure of the amount of<unk>  in the<unk>  that comes from<unk> . <unk>  is a substance secreted by the liver, and removed from the<unk>  by the kidneys.
Blood urea nitrogen
Uric acid
Hematocrit
Blood sugar
Ammonia
Creatinine
Glycosylated hemoglobin
Albumin