Uric Acid crystals
Calcium Oxalate crystal (look out for the 'X' )
Crystal formation in urine can be caused:
- By an augmentation of concentration beyond the supersaturation capacity. This situation is mostly the result of a decreased dilution like in a case of insufficient water intake.
- By a decreased supersaturation capacity. This situation could be caused by a decrease in inhibitors concentration, a neutralization of these inhibitors, by some electrolytes, or a by pH change.
- By the presence of crystals with a promoter effect on the crystallization of another species. Crystallization of calcium oxalate promoted by amorphous urates is a good example of this phenomenon.
Usual urine crystals found in Urine: