Different Forms of Calcium Oxlalate crystals

  • Calcium Oxlalate crystals are normal in urine.
  • Appearance: colorless, many forms:
    1. Dihydrate: octahedral (“envelope”) is most common
    2. 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

Monohydrate and Dihydrate Calcium Oxalate Crystals

 

Dihydrate Calcium Oxalate - Envelope Shape

Dihydrate Calcium Oxalate – Envelope Shape

 

Monohydrate Calcium Oxalate

Monohydrate Calcium Oxalate

 

 

 

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