Calcium Carbonate
Calcium carbonate crystals usually appear as large yellow-brown or colorless spheroids with radial striations. They can also be seen as smaller crystals with round, ovoid, or dumbbell shapes.

These crystals are common in the urine of normal horses, rabbits, guinea pigs and goats. They have not been observed in canine or feline urines.


Last Updated: January 16, 1996