Excessive uric acid or urate in blood as defined by its solubility in plasma at 37 degrees C; greater than 0.42mmol per liter (7.0mg/dL) in men or 0.36mmol per liter (6.0mg/dL) in women. This condition is caused by overproduction of uric acid or impaired renal clearance. hyperuricemia can be acquired, drug-induced or genetically determined (lesch-nyhan syndrome). It is associated with hypertension and gout.