Review of Common Crystals
The following table lists common crystals found in the urine sediment. Crystals that have no clinical significance must be identified and differentiated from those that can be an indication of a metabolic disorder or other clinically significant conditions.
| Uric Acid | Acidic | Yellow - Brown |
| Calcium Oxalate | Acidic/Neutral | Colorless |
| Amorphous Urates | Acidic | Yellow - Brown |
| Triple Phosphate | Alkaline | Colorless |
| Ammonium Biruate | Alkaline | Yellow - Brown |
| Amorphous Phosphate | Alkaline/Neutral | White - Colorless |
| Calcium Carbonate | Alkaline | Colorless |
