crystalluria /kris′təlo͝or″ē·ə/ , the presence of crystals in the urine. The condition may be a source of urinary tract irritation; adequate intake of alkali can prevent it. However, crystals are commonly found in urine and are usually insignificant. Cystine crystals, or uric acid crystals, precipitate in acid urine. Phosphate, or oxalate, crystals precipitate in alkaline urine.
