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Diagnosis of a kidney stone starts with a medical history, physical examination, and imaging tests. Your doctors will want to know the exact size and shape of the kidney stones. This can be done with a high resolution CT scan from the kidneys down to the bladder or an x-ray called a "KUB x-ray'' (kidney-ureter-bladder x-ray) which will show the size of the stone and its position. The KUB x-ray is often obtained by the surgeons to determine if the stone is suitable for shock wave treatment. The KUB test may be used to monitor your stone before and after treatment, but the CT scan is usually preferred for diagnosis. In some people, doctors will also order an intravenous pyelogram or lVP, a special type of X- ray of the urinary system that is taken after injecting a dye.

Second, your doctors will decide how to treat your stone. The health of your kidneys will be evaluated by blood tests and urine tests. Your health, the size and location of your stone and other things will be considered.

Later, your doctor will want to find the cause of the stone. The stone will be analyzed after it comes out of your body, and your doctor will test your blood for calcium, phosphorus and uric acid. The doctor may also ask that you collect your urine for 24 hours to test for calcium and uric acid.

What is the necessity of studying the contents of the stone?

There are four types of stones. Studying the stone can help understand why you have it and how to reduce the risk of further stones.

The most common type of stone contains calcium. Calcium is a normal part of a healthy diet. The kidney usually removes extra calcium that the body doesn't need. Often people with stones keep too much calcium. This calcium combines with waste products like oxylate to form a stone. The most common combination is called calcium oxalate.

Less common types of stones are: Infection-related stones, containing magnesium and ammonia called struvite stones and acid-related stones, called uric acid stones, which might be related to eating too much protein. The rarest type of stone is a cvstine stone that tends to run in families.