Crystalluria

Crystalluria
Comparison of different types of urine crystals
Struvite crystals found in a urinalysis

Crystalluria refers to crystals found in the urine when performing a urine test. Crystalluria is considered often as a benign condition and as one of the side effects of sulfonamides and penicillins.

The main reason for the identification of urinary crystals is to detect the presence of the relatively few abnormal types that may represent a disease.