Crystals in Urine: Acidic Urine
Crystals Formation and appearance of crystals in urine depends upon pH of the urine, i.e. acidic or alkaline. Crystals in Acidic Urine These are as under : i. Calcium oxalate ii. Uric acid iii. Amorphous urate iv. Tyrosine v. Cystine vi. Cholesterol crystals vii. Sulphonamide i) Calcium Oxalate These are colourless refractile and have octahedral envelope-like structure. They can also be dumb-bell shaped ii) Uric Acid They are yellow or brown rhomboid-shaped seen singly or in rosettes. They can also be in the form of prism, plates and sheaves iii ) Amorphous Urate They appear as yellowish brown granules in the form of clumps. They dissolve on heating. When they are made of sodium urate, they are needle-like in the form of thorn-apple. They are passed more often in patients having gout. iv ) Tyrosine They are yellowish in the form of silky needles or sheaves .They are passed in urine in jaundice. v) ...