- Calcium Oxlalate crystals are normal in urine.
- Appearance: colorless, many forms:
- Dihydrate: octahedral (“envelope”) is most common
- Monohydrate: dumbbell, ovoid, or rectangular in shape.
- Associated with food high in oxalate (tomatoes, asparagus, ascorbic acid), Calcium oxalate is the major component of renal calculi.
- Monohydrate calcium oxalate crystals are often seen in ethylene glycol poisoning.
Monohydrate and Dihydrate Calcium Oxalate Crystals
Dihydrate Calcium Oxalate – Envelope Shape
Monohydrate Calcium Oxalate
