Kidney Stone Urine Composition. A laboratory will typically document the physical characteristics of a stone its size shape weight colour and texture. Kidney stone analysis is performed to determine the chemical composition of a stone when it is filtered out of the urine or removed from the urinary tract.
A kidney stone is a solid piece of material that forms in a kidney. Kidney stones or renal calculi are masses made of crystals. It may stay in the kidney or travel down the urinary tract.
The causes of kidney stones are complex resulting from a combination of genetic dietary and lifestyle factors.
A small stone may pass without causing symptoms. Kidney stones or renal calculi are masses made of crystals. It may stay in the kidney or travel down the urinary tract. When the urine is abnormally alkaline ph above 6 3 or 6 5 the variable oxygen becomes charged so the ion has two negative charges that can combine with calcium to make crystals.