What Causes Kidney Stones Made Of Calcium Oxalate. Calcium oxalate stones are caused by too much oxalate in the urine. In particular excessive amounts of calcium oxalate phosphate uric acid or cystine in the urine can lead to kidney stones.
Excreting too much calcium in the urine can be a risk factor for kidney stone development. Calcium oxalate crystals are the most common cause of kidney stones hard clumps of minerals and other substances that form in the kidneys. These crystals are made from oxalate a substance found.
Substances exist normally in urine that can prevent kidney stones from developing.
They are usually small and passed painlessly. Kidney stones form when conditions allow these crystals to grow in size. In particular excessive amounts of calcium oxalate phosphate uric acid or cystine in the urine can lead to kidney stones. They are usually small and passed painlessly.