<unk>  is a heterocyclic compound of carbon, nitrogen, oxygen, and hydrogen with the formula C5H4N4O3. It forms ions and salts known as urates and acid urates, such as ammonium acid urate.<unk>  is a product of the metabolic breakdown of purine nucleotides, and it is a normal component of urine. High blood concentrations of<unk>  can lead to gout and are associated with other medical conditions, including diabetes and the formation of ammonium acid urate kidney stones.
Uric acid
Bile acid
Lumirubin
Bilirubin
Blood protein
Calcium
Lipoprotein
Steatocrit