حمض البول
In human blood plasma, the reference range of uric acid is typically 3.4–7.2 mg per 100 mL (200–430 μmol/L) for men, and 2.4–6.1 mg per 100 mL for women (140–360 μmol/L). Uric acid concentrations in blood plasma above and below the normal range are known as, respectively, hyperuricemia and hypouricemia. Likewise, uric acid concentrations in urine above and below normal are known as hyperuricosuria and hypouricosuria. Uric acid levels in saliva may be associated with blood uric acid levels.