• Calcium stones are the most common type of kidney stones.They are usually made of calcium and oxalate(a natural chemical found in most foods), but are sometimes made of calcium and phosphate

  • Uric acid stones form when your urine is often too acidic.Uric acid can form stones by itself or with calcium

  • Struvite stones can happen when you have certain types of urinary tract infections in which bacteria make ammonia that builds up in your urine. Struvite stones are made of magnesium, ammonium and phosphate

  • Cystine stones are made of a chemical that your body makes naturally, called cystine. Cystine stones are very rare, and happen in people who have a genetic disorder that causes cystine to leak from the kidney into the urine

Knowing the type of kidney stone helps determine the cause and may give clues on how to reduce your risk of getting more kidney stones. If possible, try to save your kidney stone if you pass one so that you can bring it to your doctor for analysis

Kidney stones can be as small as a grain of sand or as large-sometimes larger than a pearl.They can stay in your kidneys or travel through your ureters (the tubes that go from your kidneys to your bladder) and out of your body with your urine.


When a kidney stone moves through your ureters and out your urethra with your urine, it is called passing a kidney stone. A kidney stone can also get stuck in your urinary tract and block your urine from getting through.
When you pass a kidney stone or a large kidney stone blocks the flow of your urine, it can be very painful

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Calcium Kidney Stones

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Cystine Kidney Stone

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Mixed Types of Kidney Stones

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Struvite Kidney Stones

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Uric Acid Kidney Stones

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Uric Acid and Calcium Kidney Stones