NORMAL URINARY CRYSTALS -QUICK REVISION

NORMAL URINARY CRYSTALS -QUICK REVISION

MICROSCOPY SERIES

CALCIUM OXALATE ,          )

Colourless Envelope Shaped are dihydrate form of calcium oxalate ,oxalate crystals can be found in both acidic and neutral urine.

CALCIUM OXALATE-MONOHYDRATE  FORM

URIC ACID CRYSTALS

common in acidic urine  have a distinct appearance, appearing as yellow-brown or red-brown rhombic or diamond-shaped crystals

TRIPLE PHOSPHATE CRYSTALS

Seen in Alkaline urine   Soluble in: Acetic acid  typically appear in “coffin-lid” form.  may represent staghorn calculi

Brown coloured   appear like "thorn apple"shape  seen in Alkaline urine. normal present in urine and indicates  poorly preserved specimen.

Ammonium biurate crystals

circular crystals with radial striations or dumbell shaped ,Present  in normal urine. Seen in Alkaline urine.soluble in acetic acid

CALCIUM CARBONATE CRYSTALS

Amorphous crystals

Seen in refrigerated sample .present in normal urine.The pH of the urine can be a guide to the likely nature of the amorphous crystals  Amorphous phosphates -alkaline urine  Amorphous urates -Seen in acidic urine

Also have look at Urinary casts